static inline void futex_get_mm(union futex_key *key)
{
	atomic_inc(&key->private.mm->mm_count);
	/*
	 * Ensure futex_get_mm() implies a full barrier such that
	 * get_futex_key() implies a full barrier. This is relied upon
	 * as full barrier (B), see the ordering comment above.
	 */
	smp_mb__after_atomic_inc();
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.