static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf)
{
	struct sock *sk = tport->sk;
	u32 res;

	/*
	 * Process message if socket is unlocked; otherwise add to backlog queue
	 *
	 * This code is based on sk_receive_skb(), but must be distinct from it
	 * since a TIPC-specific filter/reject mechanism is utilized
	 */
	bh_lock_sock(sk);
	if (!sock_owned_by_user(sk)) {
		res = filter_rcv(sk, buf);
	} else {
		if (sk_add_backlog(sk, buf, rcvbuf_limit(sk, buf)))
			res = TIPC_ERR_OVERLOAD;
		else
			res = TIPC_OK;
	}
	bh_unlock_sock(sk);

	return res;
}

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.