static int __net_init packet_net_init(struct net *net)
{
	mutex_init(&net->packet.sklist_lock);
	INIT_HLIST_HEAD(&net->packet.sklist);

	if (!proc_create("packet", 0, net->proc_net, &packet_seq_fops))
		return -ENOMEM;

	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.