Use After Free Affecting glibc-minimal-langpack package, versions <0:2.28-164.el8


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
1.39% (87th percentile)

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  • Snyk IDSNYK-CENTOS8-GLIBCMINIMALLANGPACK-2140904
  • published26 Jul 2021
  • disclosed21 May 2021

Introduced: 21 May 2021

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

How to fix?

Upgrade Centos:8 glibc-minimal-langpack to version 0:2.28-164.el8 or higher.

NVD Description

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

version 3.1