Use After Free Affecting libsepol package, versions *
Threat Intelligence
EPSS
0.1% (41st
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-LIBSEPOL-1315635
- published 1 Jul 2021
- disclosed 1 Jul 2021
Introduced: 1 Jul 2021
CVE-2021-36084 Open this link in a new tabHow to fix?
There is no fixed version for Debian:11 libsepol.
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).
References
- https://security-tracker.debian.org/tracker/CVE-2021-36084
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31065
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-417.yaml
- https://github.com/SELinuxProject/selinux/commit/f34d3d30c8325e4847a6b696fe7a3936a8a361f3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
CVSS Scores
version 3.1