static __net_init int net_ns_net_init(struct net *net)
{
#ifdef CONFIG_NET_NS
	net->ns.ops = &netns_operations;
#endif
	return ns_alloc_inum(&net->ns);
}

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.