NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass stack guard protection. The component is: nptl. The attack vector is: Exploit stack buffer overflow vulnerability and use this bypass vulnerability to bypass stack guard. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2019-1010022
• https://sourceware.org/bugzilla/show_bug.cgi?id=22850
• https://sourceware.org/bugzilla/show_bug.cgi?id=22850#c3
• https://ubuntu.com/security/CVE-2019-1010022

NVD Description

Note: Versions mentioned in the description apply only to the upstream tar package and not the tar package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Tar 1.15.1 does not properly warn the user when extracting setuid or setgid files, which may allow local users or remote attackers to gain privileges.

Remediation

There is no fixed version for Debian:12 tar.

References

• https://security-tracker.debian.org/tracker/CVE-2005-2541
• http://marc.info/?l=bugtraq&m=112327628230258&w=2
• https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c@%3Cissues.guacamole.apache.org%3E
• https://lists.apache.org/thread.html/rc713534b10f9daeee2e0990239fa407e2118e4aa9e88a7041177497c%40%3Cissues.guacamole.apache.org%3E

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2019-1010023
• https://support.f5.com/csp/article/K11932200?utm_source=f5support&utm_medium=RSS
• https://sourceware.org/bugzilla/show_bug.cgi?id=22851
• http://www.securityfocus.com/bid/109167
• https://ubuntu.com/security/CVE-2019-1010023
• https://support.f5.com/csp/article/K11932200?utm_source=f5support&amp%3Butm_medium=RSS

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl package and not the perl package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in to verify certificates.

Remediation

There is no fixed version for Debian:12 perl.

References

• https://security-tracker.debian.org/tracker/CVE-2023-31486
• https://security.netapp.com/advisory/ntap-20241129-0011/
• http://www.openwall.com/lists/oss-security/2023/04/29/1
• http://www.openwall.com/lists/oss-security/2023/05/03/3
• http://www.openwall.com/lists/oss-security/2023/05/03/5
• http://www.openwall.com/lists/oss-security/2023/05/07/2
• https://blog.hackeriet.no/perl-http-tiny-insecure-tls-default-affects-cpan-modules/
• https://github.com/chansen/p5-http-tiny/pull/153
• https://hackeriet.github.io/cpan-http-tiny-overview/
• https://www.openwall.com/lists/oss-security/2023/04/18/14
• https://www.openwall.com/lists/oss-security/2023/05/03/4
• https://www.reddit.com/r/perl/comments/111tadi/psa_httptiny_disabled_ssl_verification_by_default/

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2026-25210
• https://github.com/libexpat/libexpat/pull/1075
• https://github.com/libexpat/libexpat/pull/1075/commits/9c2d990389e6abe2e44527eeaa8b39f16fe859c7

NVD Description

Note: Versions mentioned in the description apply only to the upstream ncurses package and not the ncurses package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The infocmp command-line tool in ncurses before 6.5-20251213 has a stack-based buffer overflow in analyze_string in progs/infocmp.c.

Remediation

There is no fixed version for Debian:12 ncurses.

References

• https://security-tracker.debian.org/tracker/CVE-2025-69720
• https://github.com/Cao-Wuhui/CVE-2025-69720
• https://invisible-island.net/archives/ncurses/6.5/
• https://invisible-island.net/ncurses/
• https://marc.info/?l=ncurses-bug&m=176539968328570&w=2
• https://marc.info/?l=ncurses-bug&m=176540731801330&w=2
• https://marc.info/?l=ncurses-bug&m=176545557728083&w=2

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2024-28757
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOHFNOUQ43DD/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6YKJKPUCTBE/
• http://www.openwall.com/lists/oss-security/2024/03/15/1
• https://github.com/libexpat/libexpat/issues/839
• https://github.com/libexpat/libexpat/pull/842
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOHFNOUQ43DD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J7NAP3E3N7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6YKJKPUCTBE/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J7NAP3E3N7/
• https://security.netapp.com/advisory/ntap-20240322-0001/

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\1\1|t1|\\2537)+' in grep.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2018-20796
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&utm_medium=RSS
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141
• https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html
• https://security.netapp.com/advisory/ntap-20190315-0002/
• http://www.securityfocus.com/bid/107160
• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-20796
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\1\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2019-9192
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&utm_medium=RSS
• https://sourceware.org/bugzilla/show_bug.cgi?id=24269
• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-9192
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgcrypt20 package and not the libgcrypt20 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.

Remediation

There is no fixed version for Debian:12 libgcrypt20.

References

• https://security-tracker.debian.org/tracker/CVE-2018-6829
• https://github.com/weikengchen/attack-on-libgcrypt-elgamal
• https://github.com/weikengchen/attack-on-libgcrypt-elgamal/wiki
• https://lists.gnupg.org/pipermail/gcrypt-devel/2018-February/004394.html
• https://www.oracle.com/security-alerts/cpujan2020.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream coreutils package and not the coreutils package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Remediation

There is no fixed version for Debian:12 coreutils.

References

• https://security-tracker.debian.org/tracker/CVE-2016-2781
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
• http://www.openwall.com/lists/oss-security/2016/02/28/2
• http://www.openwall.com/lists/oss-security/2016/02/28/3
• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-2781
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

NVD Description

Note: Versions mentioned in the description apply only to the upstream ncurses package and not the ncurses package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

NCurse v6.4-20230418 was discovered to contain a segmentation fault via the component _nc_wrap_entry().

Remediation

There is no fixed version for Debian:12 ncurses.

References

• https://security-tracker.debian.org/tracker/CVE-2023-50495
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LU4MYMKFEZQ5VSCVLRIZGDQOUW3T44GT/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LU4MYMKFEZQ5VSCVLRIZGDQOUW3T44GT/
• https://lists.gnu.org/archive/html/bug-ncurses/2023-04/msg00020.html
• https://lists.gnu.org/archive/html/bug-ncurses/2023-04/msg00029.html
• https://security.netapp.com/advisory/ntap-20240119-0008/

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

initscripts in rPath Linux 1 sets insecure permissions for the /var/log/btmp file, which allows local users to obtain sensitive information regarding authentication attempts. NOTE: because sshd detects the insecure permissions and does not log certain events, this also prevents sshd from logging failed authentication attempts by remote attackers.

Remediation

There is no fixed version for Debian:12 shadow.

References

• https://security-tracker.debian.org/tracker/CVE-2007-5686
• http://www.securityfocus.com/archive/1/482129/100/100/threaded
• http://www.securityfocus.com/archive/1/482857/100/0/threaded
• https://issues.rpath.com/browse/RPL-1825
• http://secunia.com/advisories/27215
• http://www.securityfocus.com/bid/26048
• http://www.vupen.com/english/advisories/2007/3474

NVD Description

Note: Versions mentioned in the description apply only to the upstream util-linux package and not the util-linux package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the setpwnam() function, affecting SUID (Set User ID) login-utils utilities writing to the password database.

Remediation

There is no fixed version for Debian:12 util-linux.

References

• https://security-tracker.debian.org/tracker/CVE-2025-14104
• https://access.redhat.com/security/cve/CVE-2025-14104
• https://bugzilla.redhat.com/show_bug.cgi?id=2419369
• https://access.redhat.com/errata/RHSA-2026:1696
• https://access.redhat.com/errata/RHSA-2026:1852
• https://access.redhat.com/errata/RHSA-2026:1913
• https://access.redhat.com/errata/RHSA-2026:2485
• https://access.redhat.com/errata/RHSA-2026:2563
• https://access.redhat.com/errata/RHSA-2026:2737
• https://access.redhat.com/errata/RHSA-2026:2800
• https://access.redhat.com/errata/RHSA-2026:3406
• https://access.redhat.com/errata/RHSA-2026:4943
• https://access.redhat.com/errata/RHSA-2026:7180

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2025-66382
• https://github.com/libexpat/libexpat/issues/1076
• http://www.openwall.com/lists/oss-security/2025/12/02/1
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2023-52426
• https://cwe.mitre.org/data/definitions/776.html
• https://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404
• https://github.com/libexpat/libexpat/pull/777
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/
• https://security.netapp.com/advisory/ntap-20240307-0005/

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat before 2.7.5 allows an infinite loop while parsing DTD content.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2026-32777
• https://github.com/libexpat/libexpat/issues/1161
• https://github.com/libexpat/libexpat/pull/1159
• https://github.com/libexpat/libexpat/pull/1162
• https://issues.oss-fuzz.com/issues/486993411

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2026-32778
• https://github.com/libexpat/libexpat/pull/1159
• https://github.com/libexpat/libexpat/pull/1163

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2026-32776
• https://github.com/libexpat/libexpat/pull/1158
• https://github.com/libexpat/libexpat/pull/1159

NVD Description

Note: Versions mentioned in the description apply only to the upstream gcc-12 package and not the gcc-12 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.

Remediation

There is no fixed version for Debian:12 gcc-12.

References

• https://security-tracker.debian.org/tracker/CVE-2022-27943
• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105039
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/
• https://sourceware.org/bugzilla/show_bug.cgi?id=28995
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H424YXGW7OKXS2NCAP35OP6Y4P4AW6VG/

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng1.6 package and not the libpng1.6 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A heap overflow flaw was found in libpngs' pngimage.c program. This flaw allows an attacker with local network access to pass a specially crafted PNG file to the pngimage utility, causing an application to crash, leading to a denial of service.

Remediation

There is no fixed version for Debian:12 libpng1.6.

References

• https://security-tracker.debian.org/tracker/CVE-2021-4214
• https://access.redhat.com/security/cve/CVE-2021-4214
• https://bugzilla.redhat.com/show_bug.cgi?id=2043393
• https://github.com/glennrp/libpng/issues/302
• https://security.netapp.com/advisory/ntap-20221020-0001/

NVD Description

Note: Versions mentioned in the description apply only to the upstream tar package and not the tar package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, leading to hidden file injection with fully attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially allowing an attacker to introduce malicious files onto a system without detection.

Remediation

There is no fixed version for Debian:12 tar.

References

• https://security-tracker.debian.org/tracker/CVE-2026-5704
• https://access.redhat.com/security/cve/CVE-2026-5704
• https://bugzilla.redhat.com/show_bug.cgi?id=2455360
• http://www.openwall.com/lists/oss-security/2026/04/11/10
• http://www.openwall.com/lists/oss-security/2026/04/11/11
• http://www.openwall.com/lists/oss-security/2026/04/12/2

NVD Description

Note: Versions mentioned in the description apply only to the upstream util-linux package and not the util-linux package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A flaw was found in the util-linux chfn and chsh utilities when compiled with Readline support. The Readline library uses an "INPUTRC" environment variable to get a path to the library config file. When the library cannot parse the specified file, it prints an error message containing data from the file. This flaw allows an unprivileged user to read root-owned files, potentially leading to privilege escalation. This flaw affects util-linux versions prior to 2.37.4.

Remediation

There is no fixed version for Debian:12 util-linux.

References

• https://security-tracker.debian.org/tracker/CVE-2022-0563
• https://lore.kernel.org/util-linux/20220214110609.msiwlm457ngoic6w@ws.net.home/T/#u
• https://lore.kernel.org/util-linux/20220214110609.msiwlm457ngoic6w%40ws.net.home/T/#u
• https://security.gentoo.org/glsa/202401-08
• https://security.netapp.com/advisory/ntap-20220331-0002/

NVD Description

Note: Versions mentioned in the description apply only to the upstream zlib package and not the zlib package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

Remediation

There is no fixed version for Debian:12 zlib.

References

• https://security-tracker.debian.org/tracker/CVE-2026-27171
• https://7asecurity.com/blog/2026/02/zlib-7asecurity-audit/
• https://github.com/madler/zlib/releases/tag/v1.3.2
• https://ostif.org/zlib-audit-complete/
• https://github.com/madler/zlib/issues/904
• https://7asecurity.com/reports/pentest-report-zlib-RC1.1.pdf

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass ASLR using cache of thread stack and heap. The component is: glibc. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2019-1010024
• https://support.f5.com/csp/article/K06046097
• https://support.f5.com/csp/article/K06046097?utm_source=f5support&utm_medium=RSS
• https://sourceware.org/bugzilla/show_bug.cgi?id=22852
• http://www.securityfocus.com/bid/109162
• https://ubuntu.com/security/CVE-2019-1010024
• https://support.f5.com/csp/article/K06046097?utm_source=f5support&amp%3Butm_medium=RSS

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may guess the heap addresses of pthread_created thread. The component is: glibc. NOTE: the vendor's position is "ASLR bypass itself is not a vulnerability.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2019-1010025
• https://support.f5.com/csp/article/K06046097
• https://support.f5.com/csp/article/K06046097?utm_source=f5support&utm_medium=RSS
• https://sourceware.org/bugzilla/show_bug.cgi?id=22853
• https://ubuntu.com/security/CVE-2019-1010025
• https://support.f5.com/csp/article/K06046097?utm_source=f5support&amp%3Butm_medium=RSS

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng1.6 package and not the libpng1.6 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A flaw has been found in pnggroup libpng up to 1.6.55. Affected by this vulnerability is the function do_pnm2png of the file contrib/pngminus/pnm2png.c of the component pnm2png. This manipulation of the argument width/height causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Remediation

There is no fixed version for Debian:12 libpng1.6.

References

• https://security-tracker.debian.org/tracker/CVE-2026-3713
• https://github.com/biniamf/pocs/tree/main/pnm2png
• https://github.com/pnggroup/libpng/
• https://github.com/pnggroup/libpng/issues/794
• https://vuldb.com/?ctiid.349658
• https://vuldb.com/?id.349658
• https://vuldb.com/?submit.761996

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

An issue was discovered in systemd 253. An attacker can modify a sealed log file such that, in some views, not all existing and sealed log messages are displayed. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."

Remediation

There is no fixed version for Debian:12 systemd.

References

• https://security-tracker.debian.org/tracker/CVE-2023-31437
• https://github.com/kastel-security/Journald
• https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf
• https://github.com/systemd/systemd/releases

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

An issue was discovered in systemd 253. An attacker can truncate a sealed log file and then resume log sealing such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."

Remediation

There is no fixed version for Debian:12 systemd.

References

• https://security-tracker.debian.org/tracker/CVE-2023-31438
• https://github.com/kastel-security/Journald
• https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf
• https://github.com/systemd/systemd/pull/28886
• https://github.com/systemd/systemd/releases

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

An issue was discovered in systemd 253. An attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."

Remediation

There is no fixed version for Debian:12 systemd.

References

• https://security-tracker.debian.org/tracker/CVE-2023-31439
• https://github.com/kastel-security/Journald
• https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf
• https://github.com/systemd/systemd/pull/28885
• https://github.com/systemd/systemd/releases

NVD Description

Note: Versions mentioned in the description apply only to the upstream xz-utils package and not the xz-utils package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.

Remediation

There is no fixed version for Debian:12 xz-utils.

References

• https://security-tracker.debian.org/tracker/CVE-2026-34743
• https://github.com/tukaani-project/xz/commit/c8c22869e780ff57c96b46939c3d79ff99395f87
• https://github.com/tukaani-project/xz/releases/tag/v5.8.3
• https://github.com/tukaani-project/xz/security/advisories/GHSA-x872-m794-cxhv
• http://www.openwall.com/lists/oss-security/2026/03/31/13

NVD Description

Note: Versions mentioned in the description apply only to the upstream coreutils package and not the coreutils package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.

Remediation

There is no fixed version for Debian:12 coreutils.

References

• https://security-tracker.debian.org/tracker/CVE-2017-18018
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18018
• http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnupg2 package and not the gnupg2 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."

Remediation

There is no fixed version for Debian:12 gnupg2.

References

• https://security-tracker.debian.org/tracker/CVE-2025-30258
• https://dev.gnupg.org/T7527
• https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158
• https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnupg2 package and not the gnupg2 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.

Remediation

There is no fixed version for Debian:12 gnupg2.

References

• https://security-tracker.debian.org/tracker/CVE-2025-68972
• https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i
• https://news.ycombinator.com/item?id=46404339
• https://gpg.fail/formfeed

NVD Description

Note: Versions mentioned in the description apply only to the upstream pam package and not the pam package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A vulnerability was found in PAM. The secret information is stored in memory, where the attacker can trigger the victim program to execute by sending characters to its standard input (stdin). As this occurs, the attacker can train the branch predictor to execute an ROP chain speculatively. This flaw could result in leaked passwords, such as those found in /etc/shadow while performing authentications.

Remediation

There is no fixed version for Debian:12 pam.

References

• https://security-tracker.debian.org/tracker/CVE-2024-10041
• https://access.redhat.com/security/cve/CVE-2024-10041
• https://bugzilla.redhat.com/show_bug.cgi?id=2319212
• https://access.redhat.com/errata/RHSA-2024:9941
• https://access.redhat.com/errata/RHSA-2024:10379
• https://access.redhat.com/errata/RHSA-2024:11250

NVD Description

Note: Versions mentioned in the description apply only to the upstream coreutils package and not the coreutils package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A flaw was found in GNU Coreutils. The sort utility's begfield() function is vulnerable to a heap buffer under-read. The program may access memory outside the allocated buffer if a user runs a crafted command using the traditional key format. A malicious input could lead to a crash or leak sensitive data.

Remediation

There is no fixed version for Debian:12 coreutils.

References

• https://security-tracker.debian.org/tracker/CVE-2025-5278
• https://access.redhat.com/security/cve/CVE-2025-5278
• https://bugzilla.redhat.com/show_bug.cgi?id=2368764
• http://www.openwall.com/lists/oss-security/2025/05/27/2
• http://www.openwall.com/lists/oss-security/2025/05/29/1
• https://cgit.git.savannah.gnu.org/cgit/coreutils.git/tree/NEWS?id=8c9602e3a145e9596dc1a63c6ed67865814b6633#n14
• http://www.openwall.com/lists/oss-security/2025/05/29/2
• https://debbugs.gnu.org/cgi/bugreport.cgi?bug=78507
• https://cgit.git.savannah.gnu.org/cgit/coreutils.git/commit/?id=8c9602e3a145e9596dc1a63c6ed67865814b6633

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

systemd, when updating file permissions, allows local users to change the permissions and SELinux security contexts for arbitrary files via a symlink attack on unspecified files.

Remediation

There is no fixed version for Debian:12 systemd.

References

• https://security-tracker.debian.org/tracker/CVE-2013-4392
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=725357
• http://www.openwall.com/lists/oss-security/2013/10/01/9
• https://bugzilla.redhat.com/show_bug.cgi?id=859060

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The glob implementation in the GNU C Library (aka glibc or libc6) allows remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in STAT commands to an FTP daemon, a different vulnerability than CVE-2010-2632.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2010-4756
• http://cxib.net/stuff/glob-0day.c
• http://securityreason.com/achievement_securityalert/89
• http://securityreason.com/exploitalert/9223
• https://bugzilla.redhat.com/show_bug.cgi?id=681681
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4756
• https://security.netapp.com/advisory/ntap-20241108-0002/

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera, and other products, encrypts data by using CBC mode with chained initialization vectors, which allows man-in-the-middle attackers to obtain plaintext HTTP headers via a blockwise chosen-boundary attack (BCBA) on an HTTPS session, in conjunction with JavaScript code that uses (1) the HTML5 WebSocket API, (2) the Java URLConnection API, or (3) the Silverlight WebClient API, aka a "BEAST" attack.

Remediation

There is no fixed version for Debian:12 gnutls28.

References

• https://security-tracker.debian.org/tracker/CVE-2011-3389
• http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
• http://lists.apple.com/archives/Security-announce/2011//Oct/msg00002.html
• http://support.apple.com/kb/HT4999
• http://support.apple.com/kb/HT5001
• http://support.apple.com/kb/HT5130
• http://support.apple.com/kb/HT5281
• http://support.apple.com/kb/HT5501
• http://support.apple.com/kb/HT6150
• http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
• http://lists.apple.com/archives/security-announce/2012/Jul/msg00001.html
• http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
• http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
• http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
• http://www.us-cert.gov/cas/techalerts/TA12-010A.html
• http://www.kb.cert.org/vuls/id/864643
• http://googlechromereleases.blogspot.com/2011/10/chrome-stable-release.html
• http://blog.mozilla.com/security/2011/09/27/attack-against-tls-protected-communications/
• http://blogs.technet.com/b/msrc/archive/2011/09/26/microsoft-releases-security-advisory-2588513.aspx
• http://blogs.technet.com/b/srd/archive/2011/09/26/is-ssl-broken-more-about-security-advisory-2588513.aspx
• http://curl.haxx.se/docs/adv_20120124B.html
• http://downloads.asterisk.org/pub/security/AST-2016-001.html
• http://my.opera.com/securitygroup/blog/2011/09/28/the-beast-ssl-tls-issue
• https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_fetchmail
• https://bugzilla.novell.com/show_bug.cgi?id=719047
• https://cert-portal.siemens.com/productcert/pdf/ssa-556833.pdf
• http://technet.microsoft.com/security/advisory/2588513
• http://www.apcmedia.com/salestools/SJHN-7RKGNM/SJHN-7RKGNM_R4_EN.pdf
• http://www.ibm.com/developerworks/java/jdk/alerts/
• http://www.imperialviolet.org/2011/09/23/chromeandbeast.html
• http://www.opera.com/docs/changelogs/mac/1151/
• http://www.opera.com/docs/changelogs/mac/1160/
• http://www.opera.com/docs/changelogs/unix/1151/
• http://www.opera.com/docs/changelogs/unix/1160/
• http://www.opera.com/docs/changelogs/windows/1151/
• http://www.opera.com/docs/changelogs/windows/1160/
• http://www.opera.com/support/kb/view/1004/
• http://www.debian.org/security/2012/dsa-2398
• http://security.gentoo.org/glsa/glsa-201203-02.xml
• http://security.gentoo.org/glsa/glsa-201406-32.xml
• https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862
• http://marc.info/?l=bugtraq&m=132750579901589&w=2
• http://marc.info/?l=bugtraq&m=132872385320240&w=2
• http://marc.info/?l=bugtraq&m=133365109612558&w=2
• http://marc.info/?l=bugtraq&m=133728004526190&w=2
• http://marc.info/?l=bugtraq&m=134254866602253&w=2
• http://marc.info/?l=bugtraq&m=134254957702612&w=2
• http://ekoparty.org/2011/juliano-rizzo.php
• http://eprint.iacr.org/2004/111
• http://eprint.iacr.org/2006/136
• http://isc.sans.edu/diary/SSL+TLS+part+3+/11635
• https://ics-cert.us-cert.gov/advisories/ICSMA-18-058-02
• http://vnhacker.blogspot.com/2011/09/beast.html
• http://www.educatedguesswork.org/2011/09/security_impact_of_the_rizzodu.html
• http://www.insecure.cl/Beast-SSL.rar
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-006
• http://technet.microsoft.com/security/bulletin/MS12-006
• http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00049.html
• http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00051.html
• http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00009.html
• http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
• http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
• http://www.oracle.com/technetwork/topics/security/javacpuoct2011-443431.html
• http://osvdb.org/74829
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14752
• https://bugzilla.redhat.com/show_bug.cgi?id=737506
• http://rhn.redhat.com/errata/RHSA-2012-0508.html
• http://rhn.redhat.com/errata/RHSA-2013-1455.html
• http://secunia.com/advisories/45791
• http://secunia.com/advisories/47998
• http://secunia.com/advisories/48256
• http://secunia.com/advisories/48692
• http://secunia.com/advisories/48915
• http://secunia.com/advisories/48948
• http://secunia.com/advisories/49198
• http://secunia.com/advisories/55322
• http://secunia.com/advisories/55350
• http://secunia.com/advisories/55351
• http://www.securityfocus.com/bid/49388
• http://www.securityfocus.com/bid/49778
• http://www.securitytracker.com/id?1025997
• http://www.securitytracker.com/id?1026103
• http://www.securitytracker.com/id?1026704
• http://www.securitytracker.com/id/1029190
• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
• https://hermes.opensuse.org/messages/13154861
• https://hermes.opensuse.org/messages/13155432
• http://people.ubuntu.com/~ubuntu-security/cve/CVE-2011-3389
• http://www.ubuntu.com/usn/USN-1263-1
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:058
• http://www.redhat.com/support/errata/RHSA-2011-1384.html
• http://www.redhat.com/support/errata/RHSA-2012-0006.html
• https://github.com/mpgn/BEAST-PoC

NVD Description

Note: Versions mentioned in the description apply only to the upstream apt package and not the apt package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.

Remediation

There is no fixed version for Debian:12 apt.

References

• https://security-tracker.debian.org/tracker/CVE-2011-3374
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=642480
• https://people.canonical.com/~ubuntu-security/cve/2011/CVE-2011-3374.html
• https://seclists.org/fulldisclosure/2011/Sep/221
• https://snyk.io/vuln/SNYK-LINUX-APT-116518
• https://ubuntu.com/security/CVE-2011-3374
• https://access.redhat.com/security/cve/cve-2011-3374

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnupg2 package and not the gnupg2 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.

Remediation

There is no fixed version for Debian:12 gnupg2.

References

• https://security-tracker.debian.org/tracker/CVE-2022-3219
• https://access.redhat.com/security/cve/CVE-2022-3219
• https://bugzilla.redhat.com/show_bug.cgi?id=2127010
• https://dev.gnupg.org/D556
• https://dev.gnupg.org/T5993
• https://marc.info/?l=oss-security&m=165696590211434&w=4
• https://security.netapp.com/advisory/ntap-20230324-0001/

NVD Description

Note: Versions mentioned in the description apply only to the upstream ncurses package and not the ncurses package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A vulnerability has been found in GNU ncurses up to 6.5-20250322 and classified as problematic. This vulnerability affects the function postprocess_termcap of the file tinfo/parse_entry.c. The manipulation leads to stack-based buffer overflow. The attack needs to be approached locally. Upgrading to version 6.5-20250329 is able to address this issue. It is recommended to upgrade the affected component.

Remediation

There is no fixed version for Debian:12 ncurses.

References

• https://security-tracker.debian.org/tracker/CVE-2025-6141
• https://invisible-island.net/ncurses/NEWS.html#index-t20250329
• https://lists.gnu.org/archive/html/bug-ncurses/2025-03/msg00107.html
• https://lists.gnu.org/archive/html/bug-ncurses/2025-03/msg00109.html
• https://lists.gnu.org/archive/html/bug-ncurses/2025-03/msg00114.html
• https://vuldb.com/?ctiid.312610
• https://vuldb.com/?id.312610
• https://vuldb.com/?submit.593000
• https://www.gnu.org/

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl package and not the perl package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

_is_safe in the File::Temp module for Perl does not properly handle symlinks.

Remediation

There is no fixed version for Debian:12 perl.

References

• https://security-tracker.debian.org/tracker/CVE-2011-4116
• https://github.com/Perl-Toolchain-Gang/File-Temp/issues/14
• https://rt.cpan.org/Public/Bug/Display.html?id=69106
• https://seclists.org/oss-sec/2011/q4/238
• http://www.openwall.com/lists/oss-security/2011/11/04/2
• http://www.openwall.com/lists/oss-security/2011/11/04/4

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In systemd 259, systemd-journald can send ANSI escape sequences to the terminals of arbitrary users when a "logger -p emerg" command is executed, if ForwardToWall=yes is set.

Remediation

There is no fixed version for Debian:12 systemd.

References

• https://security-tracker.debian.org/tracker/CVE-2026-40228
• https://www.openwall.com/lists/oss-security/2026/04/08/1
• http://www.openwall.com/lists/oss-security/2026/05/05/1

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2026-24515
• https://github.com/libexpat/libexpat/pull/1131

NVD Description

Note: Versions mentioned in the description apply only to the upstream alsa-lib package and not the alsa-lib package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain a heap-based buffer overflow in the topology mixer control decoder. The tplg_decode_control_mixer1() function reads the num_channels field from untrusted .tplg data and uses it as a loop bound without validating it against the fixed-size channel array (SND_TPLG_MAX_CHAN). A crafted topology file with an excessive num_channels value can cause out-of-bounds heap writes, leading to a crash.

Remediation

There is no fixed version for Debian:12 alsa-lib.

References

• https://security-tracker.debian.org/tracker/CVE-2026-25068
• https://github.com/alsa-project/alsa-lib/commit/5f7fe33002d2d98d84f72e381ec2cccc0d5d3d40
• https://www.vulncheck.com/advisories/alsa-lib-topology-decoder-heap-based-buffer-overflow
• https://lists.debian.org/debian-lts-announce/2026/02/msg00008.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2025-59375
• https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
• https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
• https://github.com/libexpat/libexpat/issues/1018
• https://github.com/libexpat/libexpat/pull/1034
• https://issues.oss-fuzz.com/issues/439133977
• http://www.openwall.com/lists/oss-security/2025/09/16/2
• http://www.openwall.com/lists/oss-security/2026/05/01/5
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html
• https://cert-portal.siemens.com/productcert/html/ssa-089022.html

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat package and not the expat package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

Remediation

There is no fixed version for Debian:12 expat.

References

• https://security-tracker.debian.org/tracker/CVE-2026-41080
• https://github.com/libexpat/libexpat/issues/47
• https://github.com/libexpat/libexpat/pull/1183
• http://www.openwall.com/lists/oss-security/2026/04/26/1
• https://blog.hartwork.org/posts/expat-2-8-0-released/
• https://www.openwall.com/lists/oss-security/2026/04/26/1

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to enforce the caller-supplied buffer length, and can result in an out-of-bounds write when printing TSIG records.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2026-5435
• https://inbox.sourceware.org/libc-announce/7a655d55-276f-41fe-b550-feb3ebb2ce91@redhat.com/T/#u
• https://sourceware.org/bugzilla/show_bug.cgi?id=34033

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Calling the ungetwc function on a FILE stream with wide characters encoded in a character set that has overlaps between its single byte and multi-byte character encodings, in the GNU C Library version 2.43 or earlier, may result in an attempt to read bytes before an allocated buffer, potentially resulting in unintentional disclosure of neighboring data in the heap, or a program crash.

A bug in the wide character pushback implementation (_IO_wdefault_pbackfail in libio/wgenops.c) causes ungetwc() to operate on the regular character buffer (fp->_IO_read_ptr) instead of the actual wide-stream read pointer (fp->_wide_data->_IO_read_ptr). The program crash may happen in cases where fp->_IO_read_ptr is not initialized and hence points to NULL. The buffer under-read requires a special situation where the input character encoding is such that there are overlaps between single byte representations and multibyte representations in that encoding, resulting in spurious matches. The spurious match case is not possible in the standard Unicode character sets.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2026-5928
• https://sourceware.org/bugzilla/show_bug.cgi?id=33998

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.2 and newer fail to validate the RDATA content against the RDATA length in a DNS response when processing LOC, CERT, TKEY or TSIG records, which may allow an attacker to craft a DNS response, causing a target application to crash or read uninitialized memory.

These functions are for application debugging only and hence not in the path of code executed by the DNS resolver. Further, they have been deprecated since version 2.34 and should not be used by any new applications. Applications should consider porting away from these interfaces since they may be removed in future versions.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2026-6238
• https://inbox.sourceware.org/libc-announce/7a655d55-276f-41fe-b550-feb3ebb2ce91@redhat.com/T/#u
• https://sourceware.org/bugzilla/show_bug.cgi?id=34069

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.

Remediation

There is no fixed version for Debian:12 glibc.

References

• https://security-tracker.debian.org/tracker/CVE-2026-5450
• https://inbox.sourceware.org/libc-announce/b11f0003-6ec1-4bd6-b9de-9e38a4efeca3@redhat.com/T/#u
• https://sourceware.org/bugzilla/show_bug.cgi?id=CVE-2026-5450

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgcrypt20 package and not the libgcrypt20 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

A timing-based side-channel flaw was found in libgcrypt's RSA implementation. This issue may allow a remote attacker to initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts.

Remediation

There is no fixed version for Debian:12 libgcrypt20.

References

• https://security-tracker.debian.org/tracker/CVE-2024-2236
• https://access.redhat.com/errata/RHSA-2024:9404
• https://bugzilla.redhat.com/show_bug.cgi?id=2268268
• https://access.redhat.com/errata/RHSA-2025:3534
• https://access.redhat.com/errata/RHSA-2025:3530
• https://access.redhat.com/security/cve/CVE-2024-2236
• https://bugzilla.redhat.com/show_bug.cgi?id=2245218

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgcrypt20 package and not the libgcrypt20 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.

Remediation

There is no fixed version for Debian:12 libgcrypt20.

References

• https://security-tracker.debian.org/tracker/CVE-2026-41989
• https://dev.gnupg.org/T8211
• https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html
• https://www.openwall.com/lists/oss-security/2026/04/21/1

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng1.6 package and not the libpng1.6 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via the pngimage with AddressSanitizer (ASan), the program leaks memory in various locations, eventually leading to high memory usage and causing the program to become unresponsive

Remediation

There is no fixed version for Debian:12 libpng1.6.

References

• https://security-tracker.debian.org/tracker/CVE-2025-28162
• https://gist.github.com/kittener/fbfdb9b5610c6b3db0d5dea045a07c60
• https://github.com/pnggroup/libpng/issues/656

NVD Description

Note: Versions mentioned in the description apply only to the upstream libpng1.6 package and not the libpng1.6 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via png_create_read_struct() function.

Remediation

There is no fixed version for Debian:12 libpng1.6.

References

• https://security-tracker.debian.org/tracker/CVE-2025-28164
• https://gist.github.com/kittener/506516f8c22178005b4379c8b2a7de20
• https://github.com/pnggroup/libpng/issues/655

NVD Description

Note: Versions mentioned in the description apply only to the upstream libtasn1-6 package and not the libtasn1-6 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.

Remediation

There is no fixed version for Debian:12 libtasn1-6.

References

• https://security-tracker.debian.org/tracker/CVE-2025-13151
• https://gitlab.com/gnutls/libtasn1
• https://gitlab.com/gnutls/libtasn1/-/merge_requests/121
• http://www.openwall.com/lists/oss-security/2026/01/08/5
• https://www.kb.cert.org/vuls/id/271649

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

OpenSSL 3.0.0 through 3.3.2 on the PowerPC architecture is vulnerable to a Minerva attack, exploitable by measuring the time of signing of random messages using the EVP_DigestSign API, and then using the private key to extract the K value (nonce) from the signatures. Next, based on the bit size of the extracted nonce, one can compare the signing time of full-sized nonces to signatures that used smaller nonces, via statistical tests. There is a side-channel in the P-364 curve that allows private key extraction (also, there is a dependency between the bit size of K and the size of the side channel). NOTE: This CVE is disputed because the OpenSSL security policy explicitly notes that any side channels which require same physical system to be detected are outside of the threat model for the software. The timing signal is so small that it is infeasible to be detected without having the attacking process running on the same physical system.

Remediation

There is no fixed version for Debian:12 openssl.

References

• https://security-tracker.debian.org/tracker/CVE-2025-27587
• https://github.com/openssl/openssl/issues/24253
• https://minerva.crocs.fi.muni.cz

NVD Description

Note: Versions mentioned in the description apply only to the upstream shadow package and not the shadow package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

shadow-utils (aka shadow) 4.4 through 4.17.0 establishes a default /etc/subuid behavior (e.g., uid 100000 through 165535 for the first user account) that can realistically conflict with the uids of users defined on locally administered networks, potentially leading to account takeover, e.g., by leveraging newuidmap for access to an NFS home directory (or same-host resources in the case of remote logins by these local network users). NOTE: it may also be argued that system administrators should not have assigned uids, within local networks, that are within the range that can occur in /etc/subuid.

Remediation

There is no fixed version for Debian:12 shadow.

References

• https://security-tracker.debian.org/tracker/CVE-2024-56433
• https://github.com/shadow-maint/shadow/blob/e2512d5741d4a44bdd81a8c2d0029b6222728cf0/etc/login.defs#L238-L241
• https://github.com/shadow-maint/shadow/issues/1157
• https://github.com/shadow-maint/shadow/releases/tag/4.4

NVD Description

Note: Versions mentioned in the description apply only to the upstream util-linux package and not the util-linux package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU (Time-of-Check-Time-of-Use) vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privileges via fork() + setuid() + realpath(), but subsequently re-canonicalizes and opens it with root privileges (euid=0) without verifying that the path has not been replaced between both operations. Neither O_NOFOLLOW, nor inode comparison, nor post-open fstat() are employed. This allows a local unprivileged user to replace the source file with a symlink pointing to any root-owned file or device during the race window, causing the SUID binary to open and mount it as root. Exploitation requires an /etc/fstab entry with user,loop options whose path points to a directory where the attacker has write permission, and that /usr/bin/mount has the SUID bit set (the default configuration on virtually all Linux distributions). The impact is unauthorized read access to root-protected files and block devices, including backup images, disk volumes, and any file containing a valid filesystem. This issue has been patched in version 2.41.4.

Remediation

There is no fixed version for Debian:12 util-linux.

References

• https://security-tracker.debian.org/tracker/CVE-2026-27456
• https://github.com/util-linux/util-linux/commit/5e390467b26a3cf3fecc04e1a0d482dff3162fc4
• https://github.com/util-linux/util-linux/releases/tag/v2.41.4
• https://github.com/util-linux/util-linux/security/advisories/GHSA-qq4x-vfq4-9h9g