Apparmor

Adversaries can exploit CVE-2026-46331 to bypass AppArmor and unprivileged user namespace restrictions on Linux systems by abusing the `aa-exec` utility with `trinity`, `chrome`, or `flatpak` AppArmor profiles, leading to privilege escalation when the `aa-exec` binary itself is executed from a non-standard path.

Qualys discovered critical vulnerabilities in AppArmor, enabling local privilege escalation to root on vulnerable Linux systems.

Detection of unauthorized access to AppArmor kernel policy control interfaces, specifically the `.load`, `.replace`, or `.remove` files, indicating potential defense evasion or policy tampering on Linux systems.

Adversaries may abuse `apparmor_parser` to compile custom AppArmor profiles, potentially weakening security controls and facilitating privilege escalation on Linux systems.