static int crypto_ecb_crypt(struct blkcipher_desc *desc,
			    struct blkcipher_walk *walk,
			    struct crypto_cipher *tfm,
			    void (*fn)(struct crypto_tfm *, u8 *, const u8 *))
{
	int bsize = crypto_cipher_blocksize(tfm);
	unsigned int nbytes;
	int err;

	err = blkcipher_walk_virt(desc, walk);

	while ((nbytes = walk->nbytes)) {
		u8 *wsrc = walk->src.virt.addr;
		u8 *wdst = walk->dst.virt.addr;

		do {
			fn(crypto_cipher_tfm(tfm), wdst, wsrc);

			wsrc += bsize;
			wdst += bsize;
		} while ((nbytes -= bsize) >= bsize);

		err = blkcipher_walk_done(desc, walk, nbytes);
	}

	return err;
}

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