CVE-2021-36084

NameCVE-2021-36084
DescriptionThe 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).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow
Debian Bugs990526

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libsepol (PTS)stretch2.6-2vulnerable
buster2.8-1vulnerable
bullseye, sid3.1-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libsepolsource(unstable)(unfixed)990526

Notes

[bullseye] - libsepol <no-dsa> (Minor issue)
[buster] - libsepol <no-dsa> (Minor issue)
[stretch] - libsepol <no-dsa> (Minor issue)
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31065
https://github.com/SELinuxProject/selinux/commit/f34d3d30c8325e4847a6b696fe7a3936a8a361f3
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-417.yaml

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