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Commit 5c79bd9a authored by Mona Hossain's avatar Mona Hossain
Browse files

crypto: msm: Validate total data length 



Verify sum of all data segments equals the total data length.

Change-Id: I0fb9d856281d52c58536e77512f8cae75544d1bc
Signed-off-by: default avatarMona Hossain <mhossain@codeaurora.org>
parent 0984d32e

drivers/crypto/msm/qcedev.c

+11 −0
Original line number Diff line number Diff line
@@ -1723,6 +1723,9 @@ error: 
static int qcedev_check_sha_params(struct qcedev_sha_op_req *req,

						struct qcedev_control *podev)

{

	uint32_t total = 0;

	uint32_t i;



	if ((req->alg == QCEDEV_ALG_AES_CMAC) &&

				(!podev->ce_support.cmac)) {

		pr_err("%s: CMAC not supported\n", __func__);
@@ -1760,6 +1763,14 @@ static int qcedev_check_sha_params(struct qcedev_sha_op_req *req, 
		}

	}



	/* Check for sum of all src length is equal to data_len  */

	for (i = 0, total = 0; i < req->entries; i++)

		total += req->data[i].len;

	if (total != req->data_len) {

		pr_err("%s: Total src(%d) buf size != data_len (%d)\n",

			__func__, total, req->data_len);

		goto sha_error;

	}

	return 0;

sha_error:

	return -EINVAL;