static int ctrl_getfamily(struct sk_buff *skb, struct genl_info *info)
{
	struct sk_buff *msg;
	const struct genl_family *res = NULL;
	int err = -EINVAL;

	if (info->attrs[CTRL_ATTR_FAMILY_ID]) {
		u16 id = nla_get_u16(info->attrs[CTRL_ATTR_FAMILY_ID]);
		res = genl_family_find_byid(id);
		err = -ENOENT;
	}

	if (info->attrs[CTRL_ATTR_FAMILY_NAME]) {
		char *name;

		name = nla_data(info->attrs[CTRL_ATTR_FAMILY_NAME]);
		res = genl_family_find_byname(name);
#ifdef CONFIG_MODULES
		if (res == NULL) {
			genl_unlock();
			up_read(&cb_lock);
			request_module("net-pf-%d-proto-%d-family-%s",
				       PF_NETLINK, NETLINK_GENERIC, name);
			down_read(&cb_lock);
			genl_lock();
			res = genl_family_find_byname(name);
		}
#endif
		err = -ENOENT;
	}

	if (res == NULL)
		return err;

	if (!res->netnsok && !net_eq(genl_info_net(info), &init_net)) {
		/* family doesn't exist here */
		return -ENOENT;
	}

	msg = ctrl_build_family_msg(res, info->snd_portid, info->snd_seq,
				    CTRL_CMD_NEWFAMILY);
	if (IS_ERR(msg))
		return PTR_ERR(msg);

	return genlmsg_reply(msg, info);
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.