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fix CVE-2024-38796

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zhangxianting 2024-10-09 16:21:32 +08:00
parent 123b2a8e26
commit 7040a837bb
2 changed files with 39 additions and 1 deletions
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32
0092-MdePkg-Fix-overflow-issue-in-BasePeCoffLib.patch Normal file
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@ -0,0 +1,32 @@
From c95233b8525ca6828921affd1496146cff262e65 Mon Sep 17 00:00:00 2001
From: Doug Flick <dougflick@microsoft.com>
Date: Fri, 27 Sep 2024 12:08:55 -0700
Subject: [PATCH] MdePkg: Fix overflow issue in BasePeCoffLib
The RelocDir->Size is a UINT32 value, and RelocDir->VirtualAddress is
also a UINT32 value. The current code does not check for overflow when
adding RelocDir->Size to RelocDir->VirtualAddress. This patch adds a
check to ensure that the addition does not overflow.
Signed-off-by: Doug Flick <dougflick@microsoft.com>
Authored-by: sriraamx gobichettipalayam <sri..@intel.com>
---
MdePkg/Library/BasePeCoffLib/BasePeCoff.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
index 1102833..7fa4714 100644
--- a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
+++ b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
@@ -991,7 +991,7 @@ PeCoffLoaderRelocateImage (
RelocDir = &Hdr.Te->DataDirectory[0];
}
- if ((RelocDir != NULL) && (RelocDir->Size > 0)) {
+ if ((RelocDir != NULL) && (RelocDir->Size > 0) && (RelocDir->Size - 1 < MAX_UINT32 - RelocDir->VirtualAddress)) {
RelocBase = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress (ImageContext, RelocDir->VirtualAddress, TeStrippedOffset);
RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress (ImageContext,
RelocDir->VirtualAddress + RelocDir->Size - 1,
--
2.43.0

8
edk2.spec
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@ -5,7 +5,7 @@
Name: edk2
Version: %{stable_date}
Release: 21
Release: 22
Summary: EFI Development Kit II
License: BSD-2-Clause-Patent
URL: https://github.com/tianocore/edk2
@ -131,6 +131,9 @@ Patch0089: 0089-VirtioDxe-add-support-of-MMIO-Bar-for-virtio-devices.patch
Patch0090: 0090-Virtio-wait-virtio-device-reset-done.patch
Patch0091: 0091-VirtioBlk-split-large-IO-according-to-segment_size_m.patch
# Fix CVE-2024-38796
patch0092: 0092-MdePkg-Fix-overflow-issue-in-BasePeCoffLib.patch
BuildRequires: acpica-tools gcc gcc-c++ libuuid-devel python3 bc nasm python3-unversioned-command
%description
@ -331,6 +334,9 @@ chmod +x %{buildroot}%{_bindir}/Rsa2048Sha256GenerateKeys
%endif
%changelog
* Wed Oct 09 2024 zhangxianting <zhangxianting@uniontech.com> - 202011-22
- fix CVE-2024-38796
* Wed Sep 18 2024 jiangdongxu<jiangdongxu1@huawei.com> - 202011-21
- vdpa: support vdpa blk/scsi device boot