Use After Free Affecting glibc-langpack-hr package, versions <0:2.26-57.amzn2


Severity

Recommended
low

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1.39% (87th percentile)

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  • Snyk IDSNYK-AMZN2-GLIBCLANGPACKHR-2348934
  • published21 Jan 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 Amazon-Linux:2 glibc-langpack-hr to version 0:2.26-57.amzn2 or higher.
This issue was patched in ALAS2-2022-1736.

NVD Description

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

version 3.1