Use After Free Affecting libsepol package, versions <3.1-1+deb11u1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.09% (41st percentile)

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  • Snyk IDSNYK-DEBIAN11-LIBSEPOL-1315635
  • published1 Jul 2021
  • disclosed1 Jul 2021

Introduced: 1 Jul 2021

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

How to fix?

Upgrade Debian:11 libsepol to version 3.1-1+deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsepol package and not the libsepol package as distributed by Debian. See How to fix? for Debian:11 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 Scores

version 3.1