static int cma_connect_ib(struct rdma_id_private *id_priv,
			  struct rdma_conn_param *conn_param)
{
	struct ib_cm_req_param req;
	struct rdma_route *route;
	void *private_data;
	struct ib_cm_id	*id;
	int offset, ret;

	memset(&req, 0, sizeof req);
	offset = cma_user_data_offset(id_priv);
	req.private_data_len = offset + conn_param->private_data_len;
	if (req.private_data_len < conn_param->private_data_len)
		return -EINVAL;

	if (req.private_data_len) {
		private_data = kzalloc(req.private_data_len, GFP_ATOMIC);
		if (!private_data)
			return -ENOMEM;
	} else {
		private_data = NULL;
	}

	if (conn_param->private_data && conn_param->private_data_len)
		memcpy(private_data + offset, conn_param->private_data,
		       conn_param->private_data_len);

	id = ib_create_cm_id(id_priv->id.device, cma_ib_handler, id_priv);
	if (IS_ERR(id)) {
		ret = PTR_ERR(id);
		goto out;
	}
	id_priv->cm_id.ib = id;

	route = &id_priv->id.route;
	if (private_data) {
		ret = cma_format_hdr(private_data, id_priv);
		if (ret)
			goto out;
		req.private_data = private_data;
	}

	req.primary_path = &route->path_rec[0];
	if (route->num_paths == 2)
		req.alternate_path = &route->path_rec[1];

	req.service_id = rdma_get_service_id(&id_priv->id, cma_dst_addr(id_priv));
	req.qp_num = id_priv->qp_num;
	req.qp_type = id_priv->id.qp_type;
	req.starting_psn = id_priv->seq_num;
	req.responder_resources = conn_param->responder_resources;
	req.initiator_depth = conn_param->initiator_depth;
	req.flow_control = conn_param->flow_control;
	req.retry_count = min_t(u8, 7, conn_param->retry_count);
	req.rnr_retry_count = min_t(u8, 7, conn_param->rnr_retry_count);
	req.remote_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT;
	req.local_cm_response_timeout = CMA_CM_RESPONSE_TIMEOUT;
	req.max_cm_retries = CMA_MAX_CM_RETRIES;
	req.srq = id_priv->srq ? 1 : 0;

	ret = ib_send_cm_req(id_priv->cm_id.ib, &req);
out:
	if (ret && !IS_ERR(id)) {
		ib_destroy_cm_id(id);
		id_priv->cm_id.ib = NULL;
	}

	kfree(private_data);
	return ret;
}

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.