Vulnerability 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 Score
3.3
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 11.0 |
| Netapp | Active Iq Unified Manager | - |
| Netapp | Bootstrap Os | - |
| Netapp | Hci Compute Node | - |
| Netapp | H610C Firmware | - |
| Netapp | H610C | - |
| Netapp | H610S Firmware | - |
| Netapp | H610S | - |
| Netapp | H615C Firmware | - |
| Netapp | H615C | - |
| Selinux Project | Selinux | < 3.3 |
| Fedoraproject | Fedora | 35 |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177ExploitIssue TrackingPatch
- https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6PatchThird Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproBroken Link
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177ExploitIssue TrackingPatch
- https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6PatchThird Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00021.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproBroken Link
- https://security.netapp.com/advisory/ntap-20250207-0004/Third Party Advisory
FAQ
What is CVE-2021-36086?
CVE-2021-36086 is a vulnerability with a CVSS score of 3.3 (LOW). 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 been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-36086?
Check the references section above for vendor advisories and patch information. Affected products include: Debian Debian Linux, Netapp Active Iq Unified Manager, Netapp Bootstrap Os, Netapp Hci Compute Node, Netapp H610C Firmware.