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NULL Pointer Dereference Affecting glibc package, versions <0:2.26-57.amzn2

0.0
medium

Snyk CVSS

    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 1.7% (88th percentile)
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NVD
7.5 high
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Red Hat
5.9 medium

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  • Snyk ID SNYK-AMZN2-GLIBC-6098987
  • published 5 Dec 2023
  • disclosed 12 Aug 2021
Report a new vulnerability Found a mistake?

Introduced: 12 Aug 2021

CVE-2021-38604 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 glibc to version 0:2.26-57.amzn2 or higher.
This issue was patched in ALAS2-2023-2371.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.

References