static void __exit nf_conntrack_proto_dccp_fini(void)
{
	nf_ct_l4proto_unregister(&dccp_proto6);
	nf_ct_l4proto_unregister(&dccp_proto4);
	unregister_pernet_subsys(&dccp_net_ops);
}

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.