V1:
This patch is to fix the issue that StandaloneMmCore fails to detect uncompressed inner FV.
PR: https://github.com/tianocore/edk2/pull/4943

V2:
Based on V1, fix some other issues
1. Add Missing object size checks before casting pointers to header types
  a. InnerFvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)SectionData; 
     This is introduced in V1, add the size check on SectionDataSize against EFI_FIRMWARE_VOLUME_HEADER
  b. Section = (EFI_COMMON_SECTION_HEADER *)(FileHeader + 1);
     Use FfsFindSection instead of FfsFindSectionData to avoid pointer casting.
2. Fix potential memory leak issue that ScratchBuffer is not freed when page allocation for DstBuffer fails.
PR: https://github.com/tianocore/edk2/pull/4965

V3:
1. Separate patch per individual issue fix on patch V2.
2. Fix one more issue: Limit FwVol encapsulation section recursion in MmCoreFfsFindMmDriver().
PR: https://github.com/tianocore/edk2/pull/4975

V4:
Patch (1/4): Move the declaration of MmCoreFfsFindMmDriver() from source file to the header file "StandaloneMmCore.h"
Patch (2/4): Handle the case that ExtractGuidedSectionDecode()'s decoded buffer is identical to the data in InputSection
Patch (3/4): Fix the issue 'Section + 1' migth be a wrong address for InnerFvHeader if Section is EFI_COMMON_SECTION_HEADER2.
Patch (4/4): 'Continue' if an EFI_SECTION_FIRMWARE_VOLUME_IMAGE is found, do not look for an EFI_SECTION_GUID_DEFINED again.
PR: https://github.com/tianocore/edk2/pull/5004

For the recursion logic improvement, Let's do it in other patch set in future after this patch is committed.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Ray Ni <ray.ni@intel.com>

Wei6 Xu (4):
  StandaloneMmPkg/Core: Limit FwVol encapsulation section recursion
  StandaloneMmPkg/Core: Fix potential memory leak issue
  StandaloneMmPkg/Core: Fix issue that offset calculation might be wrong
  StandaloneMmPkg/Core: Fix the failure to find uncompressed inner FV

 StandaloneMmPkg/Core/Dispatcher.c         |  5 --
 StandaloneMmPkg/Core/FwVol.c              | 88 +++++++++++++++++------
 StandaloneMmPkg/Core/StandaloneMmCore.c   |  7 +-
 StandaloneMmPkg/Core/StandaloneMmCore.h   | 26 +++++++
 StandaloneMmPkg/Core/StandaloneMmCore.inf |  3 +
 StandaloneMmPkg/StandaloneMmPkg.dec       |  5 ++
 6 files changed, 103 insertions(+), 31 deletions(-)

-- 
2.29.2.windows.2



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