generic_ip_connect(struct TCP_Server_Info *server)
{
	int rc = 0;
	__be16 sport;
	int slen, sfamily;
	struct socket *socket = server->ssocket;
	struct sockaddr *saddr;

	saddr = (struct sockaddr *) &server->dstaddr;

	if (server->dstaddr.ss_family == AF_INET6) {
		sport = ((struct sockaddr_in6 *) saddr)->sin6_port;
		slen = sizeof(struct sockaddr_in6);
		sfamily = AF_INET6;
	} else {
		sport = ((struct sockaddr_in *) saddr)->sin_port;
		slen = sizeof(struct sockaddr_in);
		sfamily = AF_INET;
	}

	if (socket == NULL) {
		rc = __sock_create(cifs_net_ns(server), sfamily, SOCK_STREAM,
				   IPPROTO_TCP, &socket, 1);
		if (rc < 0) {
			cERROR(1, "Error %d creating socket", rc);
			server->ssocket = NULL;
			return rc;
		}

		/* BB other socket options to set KEEPALIVE, NODELAY? */
		cFYI(1, "Socket created");
		server->ssocket = socket;
		socket->sk->sk_allocation = GFP_NOFS;
		if (sfamily == AF_INET6)
			cifs_reclassify_socket6(socket);
		else
			cifs_reclassify_socket4(socket);
	}

	rc = bind_socket(server);
	if (rc < 0)
		return rc;

	rc = socket->ops->connect(socket, saddr, slen, 0);
	if (rc < 0) {
		cFYI(1, "Error %d connecting to server", rc);
		sock_release(socket);
		server->ssocket = NULL;
		return rc;
	}

	/*
	 * Eventually check for other socket options to change from
	 * the default. sock_setsockopt not used because it expects
	 * user space buffer
	 */
	socket->sk->sk_rcvtimeo = 7 * HZ;
	socket->sk->sk_sndtimeo = 5 * HZ;

	/* make the bufsizes depend on wsize/rsize and max requests */
	if (server->noautotune) {
		if (socket->sk->sk_sndbuf < (200 * 1024))
			socket->sk->sk_sndbuf = 200 * 1024;
		if (socket->sk->sk_rcvbuf < (140 * 1024))
			socket->sk->sk_rcvbuf = 140 * 1024;
	}

	if (server->tcp_nodelay) {
		int val = 1;
		rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
				(char *)&val, sizeof(val));
		if (rc)
			cFYI(1, "set TCP_NODELAY socket option error %d", rc);
	}

	 cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
		 socket->sk->sk_sndbuf,
		 socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo);

	if (sport == htons(RFC1001_PORT))
		rc = ip_rfc1001_connect(server);

	return rc;
}

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.