static int cma_check_port(struct rdma_bind_list *bind_list,
			  struct rdma_id_private *id_priv, uint8_t reuseaddr)
{
	struct rdma_id_private *cur_id;
	struct sockaddr *addr, *cur_addr;

	addr = cma_src_addr(id_priv);
	hlist_for_each_entry(cur_id, &bind_list->owners, node) {
		if (id_priv == cur_id)
			continue;

		if ((cur_id->state != RDMA_CM_LISTEN) && reuseaddr &&
		    cur_id->reuseaddr)
			continue;

		cur_addr = cma_src_addr(cur_id);
		if (id_priv->afonly && cur_id->afonly &&
		    (addr->sa_family != cur_addr->sa_family))
			continue;

		if (cma_any_addr(addr) || cma_any_addr(cur_addr))
			return -EADDRNOTAVAIL;

		if (!cma_addr_cmp(addr, cur_addr))
			return -EADDRINUSE;
	}
	return 0;
}

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.