int dev_change_name(struct net_device *dev, const char *newname)
{
	char oldname[IFNAMSIZ];
	int err = 0;
	int ret;
	struct net *net;

	ASSERT_RTNL();
	BUG_ON(!dev_net(dev));

	net = dev_net(dev);
	if (dev->flags & IFF_UP)
		return -EBUSY;

	if (strncmp(newname, dev->name, IFNAMSIZ) == 0)
		return 0;

	memcpy(oldname, dev->name, IFNAMSIZ);

	err = dev_get_valid_name(dev, newname, 1);
	if (err < 0)
		return err;

rollback:
	ret = device_rename(&dev->dev, dev->name);
	if (ret) {
		memcpy(dev->name, oldname, IFNAMSIZ);
		return ret;
	}

	write_lock_bh(&dev_base_lock);
	hlist_del(&dev->name_hlist);
	write_unlock_bh(&dev_base_lock);

	synchronize_rcu();

	write_lock_bh(&dev_base_lock);
	hlist_add_head_rcu(&dev->name_hlist, dev_name_hash(net, dev->name));
	write_unlock_bh(&dev_base_lock);

	ret = call_netdevice_notifiers(NETDEV_CHANGENAME, dev);
	ret = notifier_to_errno(ret);

	if (ret) {
		/* err >= 0 after dev_alloc_name() or stores the first errno */
		if (err >= 0) {
			err = ret;
			memcpy(dev->name, oldname, IFNAMSIZ);
			goto rollback;
		} else {
			printk(KERN_ERR
			       "%s: name change rollback failed: %d.\n",
			       dev->name, ret);
		}
	}

	return err;
}

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