Replace "(UINT8 *)NewVariableData" with (UINT8 *)NewVariableData + Offset" to avoid the header of EFI_SIGNATURE_LIST being copied to the front of NewVariableData every time and update ListWalker when handling the current EFI_SIGNATURE_LIST finishes.
Cc: Zhang Chao <chao.b.zh...@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: chenc2 <chen.a.c...@intel.com> --- .../SecureBootConfigDxe/SecureBootConfigImpl.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c b/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c index d035763106..618c972ce3 100644 --- a/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c +++ b/SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigImpl.c @@ -3155,6 +3155,9 @@ DeleteSignatureEx ( } if (CheckedCount == SIGNATURE_DATA_COUNTS (ListWalker) || DelType == Delete_Signature_List_One) { + // + // If delete the whole EFI_SIGNATURE_LIST, skip and continue to next EFI_SIGNATURE_LIST. + // RemainingSize -= ListWalker->SignatureListSize; ListWalker = (EFI_SIGNATURE_LIST *)((UINT8 *)ListWalker + ListWalker->SignatureListSize); } else { @@ -3162,7 +3165,7 @@ DeleteSignatureEx ( // // Copy header. // - CopyMem ((UINT8 *)NewVariableData, ListWalker, sizeof (EFI_SIGNATURE_LIST) + ListWalker->SignatureHeaderSize); + CopyMem ((UINT8 *)NewVariableData + Offset, ListWalker, sizeof (EFI_SIGNATURE_LIST) + ListWalker->SignatureHeaderSize); Offset += sizeof (EFI_SIGNATURE_LIST) + ListWalker->SignatureHeaderSize; DataWalker = (EFI_SIGNATURE_DATA *)((UINT8 *)ListWalker + sizeof(EFI_SIGNATURE_LIST) + ListWalker->SignatureHeaderSize); @@ -3183,6 +3186,7 @@ DeleteSignatureEx ( } RemainingSize -= ListWalker->SignatureListSize; + ListWalker = (EFI_SIGNATURE_LIST *)((UINT8 *)ListWalker + ListWalker->SignatureListSize); } // -- 2.13.2.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel