CVE-2021-36086 — Use After Free in Project Selinux

CWE-416 — Use After Free7 documents6 sources
Severity
3.3LOWNVD
EPSS
0.0%
top 95.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Selinux Project SelinuxDebian LibsepolDebian Linux+1 more
Timeline
PublishedJul 1
Latest updateMay 24

Description

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).

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LExploitability: 1.8 | Impact: 1.4

Affected Packages2 packages

▶debiandebian/libsepol< libsepol 3.3-1 (bookworm)

Also affects: Debian Linux 11.0, Fedora 35

Patches

Patch: bugs.chromium.org ↗Patch: github.com ↗Patch: bugs.chromium.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-7qg9-9x35-j2qf: The CIL compiler in SELinux 3↗2022-05-24
▶
OSV
libsepol vulnerabilities↗2022-04-27
▶
OSV
CVE-2021-36086: The CIL compiler in SELinux 3↗2021-07-01
▶

📋Vendor Advisories

3
Ubuntu
libsepol vulnerabilities↗2022-04-27
▶
Red Hat
libsepol: use-after-free in cil_reset_classpermission()↗2021-04-19
▶
Debian
CVE-2021-36086: libsepol - The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermissio...↗2021
▶