Use After Free Affecting libsepol package, versions <3.1-1+deb11u1
Threat Intelligence
EPSS
0.07% (31st
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-LIBSEPOL-1315641
- published 1 Jul 2021
- disclosed 1 Jul 2021
Introduced: 1 Jul 2021
CVE-2021-36086 Open this link in a new tabHow 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_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list).
References
- https://security-tracker.debian.org/tracker/CVE-2021-36086
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml
- https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8
- 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