static void *mntns_get(struct task_struct *task)
{
	struct mnt_namespace *ns = NULL;
	struct nsproxy *nsproxy;

	rcu_read_lock();
	nsproxy = task_nsproxy(task);
	if (nsproxy) {
		ns = nsproxy->mnt_ns;
		get_mnt_ns(ns);
	}
	rcu_read_unlock();

	return ns;
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.