CVE-2021-36086
LOWCVSS 3.3/10EPSS 0.59%
Last modified
CVE-2021-36086 is a low-severity vulnerability rated 3.3/10 on the CVSS scale. 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).. EPSS estimates a 0.59% chance of exploitation in the next 30 days.
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).
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 11.0 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Bootstrap Os | All versions |
| Netapp | H610c Firmware | All versions |
| Netapp | H610s Firmware | All versions |
| Netapp | H615c Firmware | All versions |
| Selinux Project | Selinux | < 3.3 |
| Fedoraproject | Fedora | 35 |
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8Patch, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00021.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20250207-0004/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2021-36086?
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).
How severe is CVE-2021-36086?
CVE-2021-36086 has a CVSS score of 3.3/10 (LOW severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36086?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-36086?
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