static int cm_mra_handler(struct cm_work *work)
{
	struct cm_id_private *cm_id_priv;
	struct cm_mra_msg *mra_msg;
	int timeout, ret;

	mra_msg = (struct cm_mra_msg *)work->mad_recv_wc->recv_buf.mad;
	cm_id_priv = cm_acquire_mraed_id(mra_msg);
	if (!cm_id_priv)
		return -EINVAL;

	work->cm_event.private_data = &mra_msg->private_data;
	work->cm_event.param.mra_rcvd.service_timeout =
					cm_mra_get_service_timeout(mra_msg);
	timeout = cm_convert_to_ms(cm_mra_get_service_timeout(mra_msg)) +
		  cm_convert_to_ms(cm_id_priv->av.timeout);

	spin_lock_irq(&cm_id_priv->lock);
	switch (cm_id_priv->id.state) {
	case IB_CM_REQ_SENT:
		if (cm_mra_get_msg_mraed(mra_msg) != CM_MSG_RESPONSE_REQ ||
		    ib_modify_mad(cm_id_priv->av.port->mad_agent,
				  cm_id_priv->msg, timeout))
			goto out;
		cm_id_priv->id.state = IB_CM_MRA_REQ_RCVD;
		break;
	case IB_CM_REP_SENT:
		if (cm_mra_get_msg_mraed(mra_msg) != CM_MSG_RESPONSE_REP ||
		    ib_modify_mad(cm_id_priv->av.port->mad_agent,
				  cm_id_priv->msg, timeout))
			goto out;
		cm_id_priv->id.state = IB_CM_MRA_REP_RCVD;
		break;
	case IB_CM_ESTABLISHED:
		if (cm_mra_get_msg_mraed(mra_msg) != CM_MSG_RESPONSE_OTHER ||
		    cm_id_priv->id.lap_state != IB_CM_LAP_SENT ||
		    ib_modify_mad(cm_id_priv->av.port->mad_agent,
				  cm_id_priv->msg, timeout)) {
			if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD)
				atomic_long_inc(&work->port->
						counter_group[CM_RECV_DUPLICATES].
						counter[CM_MRA_COUNTER]);
			goto out;
		}
		cm_id_priv->id.lap_state = IB_CM_MRA_LAP_RCVD;
		break;
	case IB_CM_MRA_REQ_RCVD:
	case IB_CM_MRA_REP_RCVD:
		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
				counter[CM_MRA_COUNTER]);
		/* fall through */
	default:
		goto out;
	}

	cm_id_priv->msg->context[1] = (void *) (unsigned long)
				      cm_id_priv->id.state;
	ret = atomic_inc_and_test(&cm_id_priv->work_count);
	if (!ret)
		list_add_tail(&work->list, &cm_id_priv->work_list);
	spin_unlock_irq(&cm_id_priv->lock);

	if (ret)
		cm_process_work(cm_id_priv, work);
	else
		cm_deref_id(cm_id_priv);
	return 0;
out:
	spin_unlock_irq(&cm_id_priv->lock);
	cm_deref_id(cm_id_priv);
	return -EINVAL;
}

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.