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43 lines
1.7 KiB
43 lines
1.7 KiB
9 months ago
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From 77047a56601aaa955a12030343bdee973b9d393d Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Tue, 9 Jan 2024 12:29:01 +0100
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Subject: [PATCH 2/3] OvmfPkg/VirtNorFlashDxe: stop accepting gEfiVariableGuid
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Only accept gEfiAuthenticatedVariableGuid when checking the variable
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store header in ValidateFvHeader().
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The edk2 code base has been switched to use the authenticated varstore
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format unconditionally (even in case secure boot is not used or
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supported) a few years ago.
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Suggested-by: László Érsek <lersek@redhat.com>
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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Message-Id: <20240109112902.30002-3-kraxel@redhat.com>
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(cherry picked from commit ae22b2f136bcbd27135a5f4dd76d3a68a172d00e)
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---
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OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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diff --git a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c
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index 5ee98e9b59..9a614ae4b2 100644
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--- a/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c
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+++ b/OvmfPkg/VirtNorFlashDxe/VirtNorFlashFvb.c
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@@ -239,9 +239,7 @@ ValidateFvHeader (
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VariableStoreHeader = (VARIABLE_STORE_HEADER *)((UINTN)FwVolHeader + FwVolHeader->HeaderLength);
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// Check the Variable Store Guid
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- if (!CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) &&
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- !CompareGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid))
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- {
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+ if (!CompareGuid (&VariableStoreHeader->Signature, &gEfiAuthenticatedVariableGuid)) {
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DEBUG ((
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DEBUG_INFO,
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"%a: Variable Store Guid non-compatible\n",
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--
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2.39.3
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