int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
				   struct futex_q *q, union futex_key *key2,
				   struct hrtimer_sleeper *timeout)
{
	int ret = 0;

	/*
	 * With the hb lock held, we avoid races while we process the wakeup.
	 * We only need to hold hb (and not hb2) to ensure atomicity as the
	 * wakeup code can't change q.key from uaddr to uaddr2 if we hold hb.
	 * It can't be requeued from uaddr2 to something else since we don't
	 * support a PI aware source futex for requeue.
	 */
	if (!match_futex(&q->key, key2)) {
		WARN_ON(q->lock_ptr && (&hb->lock != q->lock_ptr));
		/*
		 * We were woken prior to requeue by a timeout or a signal.
		 * Unqueue the futex_q and determine which it was.
		 */
		plist_del(&q->list, &q->list.plist);

		/* Handle spurious wakeups gracefully */
		ret = -EWOULDBLOCK;
		if (timeout && !timeout->task)
			ret = -ETIMEDOUT;
		else if (signal_pending(current))
			ret = -ERESTARTNOINTR;
	}
	return ret;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.