CVE-2021-36086

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 breakdown

Affected products

• Debian / debian_linux11.0 – 11.0
• fedoraproject / fedora35 – 35
• NetApp / active_iq_unified_manager
• NetApp / bootstrap_os
• NetApp / h610c_firmware
• NetApp / h610s_firmware
• NetApp / h615c_firmware
• SELinux Project / selinux3.3

References

• MISChttps://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml
• MISChttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177
• PATCHhttps://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/