Use After Free Affecting glibc-langpack-chr package, versions <2:2.28-164.0.1.ksplice1.el8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
2.9% (86th percentile)

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  • Snyk IDSNYK-ORACLE8-GLIBCLANGPACKCHR-2592253
  • published10 Apr 2022
  • disclosed25 May 2021

Introduced: 25 May 2021

CVE-2021-33574  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 glibc-langpack-chr to version 2:2.28-164.0.1.ksplice1.el8 or higher.
This issue was patched in ELSA-2021-9560.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-langpack-chr package and not the glibc-langpack-chr package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1