CVE-2026-46254
Description
A flaw was found in the Linux kernel's AppArmor security module. This vulnerability arises when AppArmor processes unaligned Deterministic Finite Automaton (DFA) tables, which can originate from either kernel or userspace. The unaligned memory access triggered by these tables can lead to system instability or a kernel warning, potentially resulting in a Denial of Service (DoS).
Understanding the Weakness (CWE)
Availability,Integrity,Confidentiality
Technical Impact: Read Memory; Modify Memory; Execute Unauthorized Code or Commands; DoS: Crash, Exit, or Restart
When a memory buffer is accessed using the wrong type, it could read or write memory out of the bounds of the buffer, if the allocated buffer is smaller than the type that the code is attempting to access, leading to a crash and possibly code execution.
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