qcrypto: protect potential integer overflow.



Adding user passed parameters without check might
lead to Integer overflow and unpredictable system
behaviour.

Change-Id: Iaf8259e3c4a157e1790f1447b1b62a646988b7c4
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
Signed-off-by: Zhen Kong <zkong@codeaurora.org>

parent 314869eb

drivers/crypto/msm/qce50.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -4967,6 +4967,11 @@ int qce_aead_req(void handle, struct qce_req q_req)
		else
		q_req->cryptlen = areq->cryptlen - authsize;

		if (q_req->cryptlen > UINT_MAX - areq->assoclen) {
		pr_err("Integer overflow on total aead req length.\n");
		return -EINVAL;
		}

		totallen = q_req->cryptlen + areq->assoclen;

		if (pce_dev->support_cmd_dscr) {