CVE-2021-36084

3.3 LOW

Published: July 01, 2021 Modified: November 03, 2025

Description

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).

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31065

Source: cve@mitre.org

Exploit Issue Tracking Patch Third Party Advisory

https://github.com/SELinuxProject/selinux/commit/f34d3d30c8325e4847a6b696fe7a3936a8a361f3

Source: cve@mitre.org

Patch Third Party Advisory

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-417.yaml

Source: cve@mitre.org

Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/

Source: cve@mitre.org

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31065