[edk2-devel] [PATCH v2 2/3] OvmfPkg/VirtioGpuDxe: Check QueryMode arguments

Dimitrije Pavlov posted 3 patches 3 years, 5 months ago
There is a newer version of this series
[edk2-devel] [PATCH v2 2/3] OvmfPkg/VirtioGpuDxe: Check QueryMode arguments
Posted by Dimitrije Pavlov 3 years, 5 months ago
The current implementation does not check if Info or SizeInfo
pointers are NULL. This causes the SCT test suite to crash.

Add a check to return EFI_INVALID_PARAMETER if any of these
pointers are NULL.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Sunny Wang <Sunny.Wang@arm.com>
Cc: Jeff Booher-Kaeding <Jeff.Booher-Kaeding@arm.com>
Cc: Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@arm.com>

Signed-off-by: Dimitrije Pavlov <Dimitrije.Pavlov@arm.com>
---
 OvmfPkg/VirtioGpuDxe/Gop.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/OvmfPkg/VirtioGpuDxe/Gop.c b/OvmfPkg/VirtioGpuDxe/Gop.c
index 401db47672ec..bb68b1cdc2bc 100644
--- a/OvmfPkg/VirtioGpuDxe/Gop.c
+++ b/OvmfPkg/VirtioGpuDxe/Gop.c
@@ -308,7 +308,9 @@ GopQueryMode (
 {
   EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  *GopModeInfo;
 
-  if (ModeNumber >= This->Mode->MaxMode) {
+  if (Info == NULL ||
+      SizeOfInfo == NULL ||
+      ModeNumber >= This->Mode->MaxMode) {
     return EFI_INVALID_PARAMETER;
   }
 
-- 
2.37.2



-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#92440): https://edk2.groups.io/g/devel/message/92440
Mute This Topic: https://groups.io/mt/93040547/1787277
Group Owner: devel+owner@edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org]
-=-=-=-=-=-=-=-=-=-=-=-