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add edk2 patches for CVE-2022-36763, CVE-2022-36764, CVE-2022-36765, C…
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rmhsawyer authored Sep 20, 2024
1 parent a996cc5 commit dc8f86f
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2,526 changes: 2,526 additions & 0 deletions SPECS/edk2/CVE-2022-36763.patch

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2 changes: 2 additions & 0 deletions SPECS/edk2/CVE-2022-36764.nopatch
Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
CVE already patch in CVE-2022-36763.patch
Ref: https://github.com/tianocore/edk2/pull/5264
148 changes: 148 additions & 0 deletions SPECS/edk2/CVE-2022-36765.patch
Original file line number Diff line number Diff line change
@@ -0,0 +1,148 @@
From aeaee8944f0eaacbf4cdf39279785b9ba4836bb6 Mon Sep 17 00:00:00 2001
From: Gua Guo <gua.guo@intel.com>
Date: Thu, 11 Jan 2024 13:07:50 +0800
Subject: [PATCH] EmbeddedPkg/Hob: Integer Overflow in CreateHob()

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4166

Fix integer overflow in various CreateHob instances.
Fixes: CVE-2022-36765

The CreateHob() function aligns the requested size to 8
performing the following operation:
```
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
```

No checks are performed to ensure this value doesn't
overflow, and could lead to CreateHob() returning a smaller
HOB than requested, which could lead to OOB HOB accesses.

Reported-by: Marc Beatove <mbeatove@google.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Reviewed-by: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Abner Chang <abner.chang@amd.com>
Cc: John Mathew <john.mathews@intel.com>
Authored-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Gua Guo <gua.guo@intel.com>
---
EmbeddedPkg/Library/PrePiHobLib/Hob.c | 43 +++++++++++++++++++++++++++
1 file changed, 43 insertions(+)

diff --git a/EmbeddedPkg/Library/PrePiHobLib/Hob.c b/EmbeddedPkg/Library/PrePiHobLib/Hob.c
index 8eb175aa96f9..cbc35152ccbc 100644
--- a/EmbeddedPkg/Library/PrePiHobLib/Hob.c
+++ b/EmbeddedPkg/Library/PrePiHobLib/Hob.c
@@ -110,6 +110,13 @@ CreateHob (

HandOffHob = GetHobList ();

+ //
+ // Check Length to avoid data overflow.
+ //
+ if (HobLength > MAX_UINT16 - 0x7) {
+ return NULL;
+ }
+
HobLength = (UINT16)((HobLength + 0x7) & (~0x7));

FreeMemory = HandOffHob->EfiFreeMemoryTop - HandOffHob->EfiFreeMemoryBottom;
@@ -160,6 +167,9 @@ BuildResourceDescriptorHob (

Hob = CreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));
ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

Hob->ResourceType = ResourceType;
Hob->ResourceAttribute = ResourceAttribute;
@@ -401,6 +411,10 @@ BuildModuleHob (
);

Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_MODULE));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

CopyGuid (&(Hob->MemoryAllocationHeader.Name), &gEfiHobMemoryAllocModuleGuid);
Hob->MemoryAllocationHeader.MemoryBaseAddress = MemoryAllocationModule;
@@ -449,6 +463,11 @@ BuildGuidHob (
ASSERT (DataLength <= (0xffff - sizeof (EFI_HOB_GUID_TYPE)));

Hob = CreateHob (EFI_HOB_TYPE_GUID_EXTENSION, (UINT16)(sizeof (EFI_HOB_GUID_TYPE) + DataLength));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return NULL;
+ }
+
CopyGuid (&Hob->Name, Guid);
return Hob + 1;
}
@@ -512,6 +531,10 @@ BuildFvHob (
EFI_HOB_FIRMWARE_VOLUME *Hob;

Hob = CreateHob (EFI_HOB_TYPE_FV, sizeof (EFI_HOB_FIRMWARE_VOLUME));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -543,6 +566,10 @@ BuildFv2Hob (
EFI_HOB_FIRMWARE_VOLUME2 *Hob;

Hob = CreateHob (EFI_HOB_TYPE_FV2, sizeof (EFI_HOB_FIRMWARE_VOLUME2));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -584,6 +611,10 @@ BuildFv3Hob (
EFI_HOB_FIRMWARE_VOLUME3 *Hob;

Hob = CreateHob (EFI_HOB_TYPE_FV3, sizeof (EFI_HOB_FIRMWARE_VOLUME3));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
@@ -639,6 +670,10 @@ BuildCpuHob (
EFI_HOB_CPU *Hob;

Hob = CreateHob (EFI_HOB_TYPE_CPU, sizeof (EFI_HOB_CPU));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

Hob->SizeOfMemorySpace = SizeOfMemorySpace;
Hob->SizeOfIoSpace = SizeOfIoSpace;
@@ -676,6 +711,10 @@ BuildStackHob (
);

Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_STACK));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocStackGuid);
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
@@ -756,6 +795,10 @@ BuildMemoryAllocationHob (
);

Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));
+ ASSERT (Hob != NULL);
+ if (Hob == NULL) {
+ return;
+ }

ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
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