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ovmf: fix CVE-2025-2295

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According to [1], EDK2 contains a vulnerability in BIOS where a user may
cause an Integer Overflow or Wraparound by network means. A successful
exploitation of this vulnerability may lead to denial of service.

Refer debian [2], backport a patch from edk2 [3] to fix CVE-2025-2295

[1] https://nvd.nist.gov/vuln/detail/CVE-2025-2295
[2] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1100594
[3] 17cdc512f0

(From OE-Core rev: 0f59dec939cf0d313b1b01b1e7bf10e059d9d0ac)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Hongxu Jia 2025-04-07 19:37:13 +08:00 committed by Richard Purdie
parent b9139b242e
commit db026b5972
2 changed files with 57 additions and 0 deletions
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56
meta/recipes-core/ovmf/ovmf/CVE-2025-2295.patch Normal file
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@ -0,0 +1,56 @@
From 4b028816b5619ede6c3720664478055e09151516 Mon Sep 17 00:00:00 2001
From: Madhavan <madavtechy@gmail.com>
Date: Fri, 14 Mar 2025 14:15:13 -0400
Subject: [PATCH] NetworkPkg/IScsiDxe:Fix for Remote Memory Exposure in ISCSI
bz4206
Used SafeUint32Add to calculate and validate OutTransferLength with
boundary check in IScsiOnR2TRcvd to avoid integer overflow
Signed-off-by: Madhavan <madavtechy@gmail.com>
CVE: CVE-2025-2295
Upstream-Status: Backport [https://github.com/tianocore/edk2/commit/17cdc512f02a2dfd1b9e24133da56fdda099abda]
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
---
NetworkPkg/IScsiDxe/IScsiProto.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/NetworkPkg/IScsiDxe/IScsiProto.c b/NetworkPkg/IScsiDxe/IScsiProto.c
index ef587649a0..fb48e6304d 100644
--- a/NetworkPkg/IScsiDxe/IScsiProto.c
+++ b/NetworkPkg/IScsiDxe/IScsiProto.c
@@ -1,7 +1,7 @@
/** @file
The implementation of iSCSI protocol based on RFC3720.
-Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2025, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -2682,6 +2682,7 @@ IScsiOnR2TRcvd (
EFI_STATUS Status;
ISCSI_XFER_CONTEXT *XferContext;
UINT8 *Data;
+ UINT32 TransferLength;
R2THdr = (ISCSI_READY_TO_TRANSFER *)NetbufGetByte (Pdu, 0, NULL);
if (R2THdr == NULL) {
@@ -2712,7 +2713,12 @@ IScsiOnR2TRcvd (
XferContext->Offset = R2THdr->BufferOffset;
XferContext->DesiredLength = R2THdr->DesiredDataTransferLength;
- if (((XferContext->Offset + XferContext->DesiredLength) > Packet->OutTransferLength) ||
+ Status = SafeUint32Add (XferContext->Offset, XferContext->DesiredLength, &TransferLength);
+ if (EFI_ERROR (Status)) {
+ return EFI_PROTOCOL_ERROR;
+ }
+
+ if ((TransferLength > Packet->OutTransferLength) ||
(XferContext->DesiredLength > Tcb->Conn->Session->MaxBurstLength)
)
{
--
2.48.1

1
meta/recipes-core/ovmf/ovmf_git.bb
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@ -26,6 +26,7 @@ SRC_URI = "gitsm://github.com/tianocore/edk2.git;branch=master;protocol=https \
file://0002-BaseTools-makefile-adjust-to-build-in-under-bitbake.patch \
file://0003-debug-prefix-map.patch \
file://0004-reproducible.patch \
file://CVE-2025-2295.patch \
"
PV = "edk2-stable202411"