static int cma_alloc_any_port(struct idr *ps, struct rdma_id_private *id_priv)
{
	static unsigned int last_used_port;
	int low, high, remaining;
	unsigned int rover;

	inet_get_local_port_range(&init_net, &low, &high);
	remaining = (high - low) + 1;
	rover = prandom_u32() % remaining + low;
retry:
	if (last_used_port != rover &&
	    !idr_find(ps, (unsigned short) rover)) {
		int ret = cma_alloc_port(ps, id_priv, rover);
		/*
		 * Remember previously used port number in order to avoid
		 * re-using same port immediately after it is closed.
		 */
		if (!ret)
			last_used_port = rover;
		if (ret != -EADDRNOTAVAIL)
			return ret;
	}
	if (--remaining) {
		rover++;
		if ((rover < low) || (rover > high))
			rover = low;
		goto retry;
	}
	return -EADDRNOTAVAIL;
}

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.