static void crypto_gcm_init_crypt(struct ablkcipher_request *ablk_req,
				  struct aead_request *req,
				  unsigned int cryptlen)
{
	struct crypto_aead *aead = crypto_aead_reqtfm(req);
	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
	struct scatterlist *dst;
	__be32 counter = cpu_to_be32(1);

	memset(pctx->auth_tag, 0, sizeof(pctx->auth_tag));
	memcpy(req->iv + 12, &counter, 4);

	sg_init_table(pctx->src, 2);
	sg_set_buf(pctx->src, pctx->auth_tag, sizeof(pctx->auth_tag));
	scatterwalk_sg_chain(pctx->src, 2, req->src);

	dst = pctx->src;
	if (req->src != req->dst) {
		sg_init_table(pctx->dst, 2);
		sg_set_buf(pctx->dst, pctx->auth_tag, sizeof(pctx->auth_tag));
		scatterwalk_sg_chain(pctx->dst, 2, req->dst);
		dst = pctx->dst;
	}

	ablkcipher_request_set_tfm(ablk_req, ctx->ctr);
	ablkcipher_request_set_crypt(ablk_req, pctx->src, dst,
				     cryptlen + sizeof(pctx->auth_tag),
				     req->iv);
}

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