The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). This occurs because there is sometimes a lack of checks for invalid statements in an optional block.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32675 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/SELinuxProject/selinux/commit/340f0eb7f3673e8aacaf0a96cbfcd4d12a405521 Patch, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32675 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/SELinuxProject/selinux/commit/340f0eb7f3673e8aacaf0a96cbfcd4d12a405521 Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 3.3 · selinux_project, fedoraprojectNVD modified 2026-10-14 12:17
Affected (CPE criteria) 2
cpe:2.3:o:selinux_project:selinux:3.2:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
References 14
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32675 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/SELinuxProject/selinux/commit/340f0eb7f3673e8aacaf0a96cbfcd4d12a405521 Patch, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-585.yaml Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
- https://lore.kernel.org/selinux/CAEN2sdqJKHvDzPnxS-J8grU8fSf32DDtx=kyh84OsCq_Vm+yaQ%40mail.gmail.com/T/
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32675 Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/SELinuxProject/selinux/commit/340f0eb7f3673e8aacaf0a96cbfcd4d12a405521 Patch, Third Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-585.yaml Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00021.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/
- https://lore.kernel.org/selinux/CAEN2sdqJKHvDzPnxS-J8grU8fSf32DDtx=kyh84OsCq_Vm+yaQ%40mail.gmail.com/T/
- https://security.netapp.com/advisory/ntap-20250207-0004/
- https://cert-portal.siemens.com/productcert/html/ssa-202008.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html