CVE-2021-36084
Published: 1 July 2021
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).
Priority
Low
CVSS 3 base score: 3.3
Status
| Package | Release | Status |
|---|---|---|
|
libsepol Launchpad, Ubuntu, Debian |
bionic |
Released
(2.7-1ubuntu0.1)
|
| focal |
Released
(3.0-1ubuntu0.1)
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Released
(3.1-1ubuntu2.1)
|
|
| jammy |
Not vulnerable
(3.3-1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Released
(3.3-1)
|
|
| xenial |
Released
(2.4-2ubuntu0.1~esm1)
|
Notes
| Author | Note |
|---|---|
| sbeattie | AppArmor is the default LSM in Ubuntu, issue only affects compilation of selinux policy trusty version predates the introduction of CIL |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36084
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-417.yaml
- https://ubuntu.com/security/notices/USN-5391-1
- NVD
- Launchpad
- Debian