static int atalk_autobind(struct sock *sk)
{
	struct atalk_sock *at = at_sk(sk);
	struct sockaddr_at sat;
	struct atalk_addr *ap = atalk_find_primary();
	int n = -EADDRNOTAVAIL;

	if (!ap || ap->s_net == htons(ATADDR_ANYNET))
		goto out;

	at->src_net  = sat.sat_addr.s_net  = ap->s_net;
	at->src_node = sat.sat_addr.s_node = ap->s_node;

	n = atalk_pick_and_bind_port(sk, &sat);
	if (!n)
		sock_reset_flag(sk, SOCK_ZAPPED);
out:
	return n;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.