static int camellia_set_key(struct crypto_tfm *tfm, const u8 *_in_key,
			    unsigned int key_len)
{
	struct camellia_sparc64_ctx *ctx = crypto_tfm_ctx(tfm);
	const u32 *in_key = (const u32 *) _in_key;
	u32 *flags = &tfm->crt_flags;

	if (key_len != 16 && key_len != 24 && key_len != 32) {
		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
		return -EINVAL;
	}

	ctx->key_len = key_len;

	camellia_sparc64_key_expand(in_key, &ctx->encrypt_key[0],
				    key_len, &ctx->decrypt_key[0]);
	return 0;
}

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