A bug in the Linux kernel’s AppArmor subsystem allowed unaligned memory accesses during table creation. If user‑provided data was not naturally aligned, the kernel could read or write from a misaligned address, potentially causing a fault or corrupting memory. This flaw could lead to a kernel crash or unintended data corruption, exposing the system to a denial‑of‑service or privilege‑escalation scenario.

The vulnerability affects all Linux kernel releases that contain the AppArmor component without the patch. There are no explicit restricted version ranges in the advisory, so any kernel build that includes AppArmor could be impacted until the issue is addressed.

The advisory does not provide a CVSS score or EPSS value, and the vulnerability is not listed in the CISA KEV catalog. The fault that an unaligned memory access can cause makes this flaw potentially exploitable by any local user with the right AppArmor table data. The lack of a publicly known exploit or documentation on triggering the fault leaves the exact risk difficult to gauge, but the kernel crash possibility warrants prompt patching.