Use After Free Affecting libsepol package, versions <0:2.9-3.el8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.46% (39th percentile)

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  • Snyk IDSNYK-ALMALINUX8-LIBSEPOL-5634351
  • published28 May 2023
  • disclosed9 Nov 2021

Introduced: 9 Nov 2021

CVE-2021-36084  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 libsepol to version 0:2.9-3.el8 or higher.
This issue was patched in ALSA-2021:4513.

NVD Description

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

The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __cil_verify_classpermission and __cil_pre_verify_helper).

CVSS Base Scores

version 3.1