Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 8504d2be17c98265049ec334711aad4c0baed1d7
https://github.com/tianocore/edk2/commit/8504d2be17c98265049ec334711aad4c0baed1d7
Author: Sureshkumar Ponnusamy <sureshkumar.ponnus...@microsoft.com>
Date: 2024-09-03 (Tue, 03 Sep 2024)
Changed paths:
M MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c
Log Message:
-----------
MdeModulePkg/FaultTolerantWriteDxe: Fix buffer overrun issue
- This PR aims to prevent a buffer overrun issue found in FtwGetLastWriteHeader
function.As per the current code, when there is a malformed blocks (with all
bytes as 0s)
then `Offset += FTW_WRITE_TOTAL_SIZE (FtwHeader->NumberOfWrites,
FtwHeader->PrivateDataSize)` would access beyond FtwWorkSpaceSize.
- Also added the signature check to validate work space
Signed-off-by: Sureshkumar Ponnusamy <sponnus...@microsoft.com>
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