Use After Free

Affecting glibc package, versions *

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

NVD Description

Note: Versions mentioned in the description apply to the upstream glibc package.

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.

Remediation

There is no fixed version for Debian:10 glibc.

References

CVSS Score

9.8
critical severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE
CVE-2021-33574
CWE
CWE-416
Snyk ID
SNYK-DEBIAN10-GLIBC-1296899
Disclosed
25 May, 2021
Published
26 May, 2021