static int cm_timewait_handler(struct cm_work *work)
{
	struct cm_timewait_info *timewait_info;
	struct cm_id_private *cm_id_priv;
	int ret;

	timewait_info = (struct cm_timewait_info *)work;
	spin_lock_irq(&cm.lock);
	list_del(&timewait_info->list);
	spin_unlock_irq(&cm.lock);

	cm_id_priv = cm_acquire_id(timewait_info->work.local_id,
				   timewait_info->work.remote_id);
	if (!cm_id_priv)
		return -EINVAL;

	spin_lock_irq(&cm_id_priv->lock);
	if (cm_id_priv->id.state != IB_CM_TIMEWAIT ||
	    cm_id_priv->remote_qpn != timewait_info->remote_qpn) {
		spin_unlock_irq(&cm_id_priv->lock);
		goto out;
	}
	cm_id_priv->id.state = IB_CM_IDLE;
	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:
	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.