static inline struct ipv6_txoptions *txopt_get(const struct ipv6_pinfo *np)
{
	struct ipv6_txoptions *opt;

	rcu_read_lock();
	opt = rcu_dereference(np->opt);
	if (opt && !atomic_inc_not_zero(&opt->refcnt))
		opt = NULL;
	rcu_read_unlock();
	return opt;
}
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.