0974b1a5cf
- edk2-OvmfPkg-VirtioGpuDxe-ignore-display-resolutions-smal.patch [RHEL-56248] - edk2-OvmfPkg-QemuVideoDxe-ignore-display-resolutions-smal.patch [RHEL-56248] - edk2-MdePkg-Fix-overflow-issue-in-BasePeCoffLib.patch [RHEL-60833] - Resolves: RHEL-56248 (507x510 display resolution should not crash the firmware [edk2,rhel-9.6]) - Resolves: RHEL-60833 (CVE-2024-38796 edk2: Integer overflows in PeCoffLoaderRelocateImage [rhel-9.6])
38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
From f53820c753be836a79d5743d4181f6827e12bcdf Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Fri, 23 Aug 2024 14:35:53 +0200
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Subject: [PATCH 1/3] OvmfPkg/VirtioGpuDxe: ignore display resolutions smaller
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than 640x480
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RH-Author: Gerd Hoffmann <kraxel@redhat.com>
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RH-MergeRequest: 72: ignore display resolutions smaller than 640x480
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RH-Jira: RHEL-56248
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RH-Acked-by: Oliver Steffen <osteffen@redhat.com>
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RH-Commit: [1/2] 1d63fc76f46a6adb49e6c9447563d70ff9728b04 (kraxel.rh/centos-src-edk2)
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GraphicsConsoleDxe will assert in case the resolution is too small.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit 58035e8b5e11cfe2b9e6428d14c7817b6b1c83a2)
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---
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OvmfPkg/VirtioGpuDxe/Gop.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/OvmfPkg/VirtioGpuDxe/Gop.c b/OvmfPkg/VirtioGpuDxe/Gop.c
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index f64dfce5f4..d767114bbb 100644
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--- a/OvmfPkg/VirtioGpuDxe/Gop.c
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+++ b/OvmfPkg/VirtioGpuDxe/Gop.c
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@@ -265,7 +265,8 @@ GopInitialize (
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// query host for display resolution
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//
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GopNativeResolution (VgpuGop, &XRes, &YRes);
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- if ((XRes == 0) || (YRes == 0)) {
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+ if ((XRes < 640) || (YRes < 480)) {
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+ /* ignore hint, GraphicsConsoleDxe needs 640x480 or larger */
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return;
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}
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--
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2.39.3
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