[coreboot-gerrit] New patch to review for coreboot: 3f5d3d9 vboot: Convert response_length from uint32_t to size_t in VbExTpmSendReceive
Marc Jones (marc.jones@se-eng.com)
gerrit at coreboot.org
Mon Dec 22 21:54:36 CET 2014
Marc Jones (marc.jones at se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7894
-gerrit
commit 3f5d3d9742f23c31e1628496b32b5416bdaa65fe
Author: Daisuke Nojiri <dnojiri at chromium.org>
Date: Fri May 2 10:36:43 2014 -0700
vboot: Convert response_length from uint32_t to size_t in VbExTpmSendReceive
Length arguments for VbExTpmSendReceive have type uint32_t but it calls function
which expects size_t. This change converts uint32_t to size_t on call and
size_t to uint32_t on return.
BUG=None
BRANCH=None
TEST=Booted Nyan Big to Linux
Original-Signed-off-by: Daisuke Nojiri <dnojiri at chromium.org>
Original-Change-Id: I1971488baae2d060c0cddec7749461c91602a4f9
Original-Reviewed-on: https://chromium-review.googlesource.com/198016
(cherry picked from commit 6830747eb47568f2a2b494624522d37d8945c030)
Signed-off-by: Marc Jones <marc.jones at se-eng.com>
Change-Id: I20741759e7bbd60dd7044c532287d6b55047e19a
---
src/vendorcode/google/chromeos/vboot_wrapper.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/vendorcode/google/chromeos/vboot_wrapper.c b/src/vendorcode/google/chromeos/vboot_wrapper.c
index 5611451..5aa0066 100644
--- a/src/vendorcode/google/chromeos/vboot_wrapper.c
+++ b/src/vendorcode/google/chromeos/vboot_wrapper.c
@@ -225,9 +225,13 @@ VbError_t VbExTpmOpen(void)
VbError_t VbExTpmSendReceive(const uint8_t *request, uint32_t request_length,
uint8_t *response, uint32_t *response_length)
{
- if (gcontext->tis_sendrecv(request, request_length,
- response, response_length))
+ size_t len = *response_length;
+ if (gcontext->tis_sendrecv(request, request_length, response, &len))
return VBERROR_UNKNOWN;
+ /* check 64->32bit overflow and (re)check response buffer overflow */
+ if (len > *response_length)
+ return VBERROR_UNKNOWN;
+ *response_length = len;
return VBERROR_SUCCESS;
}
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