struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb)
{
	struct rtattr *rta = tb[0];
	struct crypto_attr_type *algt;

	if (!rta)
		return ERR_PTR(-ENOENT);
	if (RTA_PAYLOAD(rta) < sizeof(*algt))
		return ERR_PTR(-EINVAL);
	if (rta->rta_type != CRYPTOA_TYPE)
		return ERR_PTR(-EINVAL);

	algt = RTA_DATA(rta);

	return algt;
}

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