sha512_final(struct shash_desc *desc, u8 *hash)
{
	struct sha512_state *sctx = shash_desc_ctx(desc);
        static u8 padding[128] = { 0x80, };
	__be64 *dst = (__be64 *)hash;
	__be64 bits[2];
	unsigned int index, pad_len;
	int i;

	/* Save number of bits */
	bits[1] = cpu_to_be64(sctx->count[0] << 3);
	bits[0] = cpu_to_be64(sctx->count[1] << 3 | sctx->count[0] >> 61);

	/* Pad out to 112 mod 128. */
	index = sctx->count[0] & 0x7f;
	pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
	crypto_sha512_update(desc, padding, pad_len);

	/* Append length (before padding) */
	crypto_sha512_update(desc, (const u8 *)bits, sizeof(bits));

	/* Store state in digest */
	for (i = 0; i < 8; i++)
		dst[i] = cpu_to_be64(sctx->state[i]);

	/* Zeroize sensitive information. */
	memset(sctx, 0, sizeof(struct sha512_state));

	return 0;
}

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