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+tianoc...@kernel.org>
Cc: Jiewen Yao <jiewen....@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Sunny Wang <sunny.w...@arm.com>
Cc: Jeff Booher-Kaeding <jeff.booher-kaed...@arm.com>
Cc: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>

Signed-off-by: Dimitrije Pavlov <dimitrije.pav...@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



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