CVE-2026-23409

A flaw was found in AppArmor, a security module in the Linux kernel. This vulnerability occurs due to incorrect verification of differential encoding chains, which are designed to prevent malicious loops. An attacker could exploit this flaw by crafting a specially designed differential encoding chain, causing the system to misinterpret it as already verified. This could lead to a bypass of security policies and potentially result in unexpected system behavior or a denial of service.