CVE-2021-36084

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).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
3.3 LOW
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
VendorProductVersion
selinux_projectselinux
3.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libsepol
bullseye
vulnerable
buster
no-dsa
stretch
no-dsa
bullseye (security)
3.1-1+deb11u1
fixed
bookworm
3.4-2.1
fixed
sid
3.7-1
fixed
trixie
3.7-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libsepol
jammy
not-affected
impish
Fixed 3.1-1ubuntu2.1
released
hirsute
ignored
groovy
ignored
focal
Fixed 3.0-1ubuntu0.1
released
bionic
Fixed 2.7-1ubuntu0.1
released
xenial
Fixed 2.4-2ubuntu0.1~esm1
released
trusty
not-affected
Common Weakness Enumeration
References
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
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
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
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/