void inet6_destroy_sock(struct sock *sk)
{
	struct ipv6_pinfo *np = inet6_sk(sk);
	struct sk_buff *skb;
	struct ipv6_txoptions *opt;

	/* Release rx options */

	skb = xchg(&np->pktoptions, NULL);
	if (skb)
		kfree_skb(skb);

	skb = xchg(&np->rxpmtu, NULL);
	if (skb)
		kfree_skb(skb);

	/* Free flowlabels */
	fl6_free_socklist(sk);

	/* Free tx options */

	opt = xchg((__force struct ipv6_txoptions **)&np->opt, NULL);
	if (opt) {
		atomic_sub(opt->tot_len, &sk->sk_omem_alloc);
		txopt_put(opt);
	}
}
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.