103 lines
3.4 KiB
Diff
103 lines
3.4 KiB
Diff
From f3548d62625d5ad2728078e4188e9f40965dbfe2 Mon Sep 17 00:00:00 2001
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From: Oliver Steffen <osteffen@redhat.com>
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Date: Thu, 7 Nov 2024 11:36:22 +0100
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Subject: [PATCH] OvmfPkg/ArmVirtPkg: Add a Fallback RNG (RH only)
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RH-Author: Oliver Steffen <osteffen@redhat.com>
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RH-MergeRequest: 82: Add a Fallback RNG (RH only)
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RH-Jira: RHEL-66234
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RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
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RH-Commit: [2/2] ae2c04680e6420e096c667a22c52ec6f6fb46935 (osteffen/edk2)
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Since the pixiefail CVE fix, the network stack requires a random number
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generator.
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In case there is no hardware random number generator available,
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have the Platform Boot Manager install a pseudo RNG to ensure
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the network can be used.
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This patch adds the fallback rng which was introduced in a
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previous commit also to the ArmVirtPkg PlatformBootManagerLib.
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Signed-off-by: Oliver Steffen <osteffen@redhat.com>
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patch_name: edk2-OvmfPkg-ArmVirtPkg-Add-a-Fallback-RNG-RH-only.patch
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present_in_specfile: true
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location_in_specfile: 49
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---
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OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBm.c | 6 ++++++
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.../PlatformBootManagerLibLight/PlatformBootManagerLib.inf | 5 +++++
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2 files changed, 11 insertions(+)
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diff --git a/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBm.c b/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBm.c
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index 2c24c65489..273e6f6a7e 100644
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--- a/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBm.c
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+++ b/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBm.c
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@@ -30,6 +30,7 @@
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#include <Guid/RootBridgesConnectedEventGroup.h>
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#include <Guid/SerialPortLibVendor.h>
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#include <Library/PlatformBootManagerCommonLib.h>
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+#include "FallbackRng.h"
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#include "PlatformBm.h"
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@@ -819,6 +820,7 @@ PlatformBootManagerBeforeConsole (
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//
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FilterAndProcess (&gEfiGraphicsOutputProtocolGuid, NULL, AddOutput);
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+
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//
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// Add the hardcoded short-form USB keyboard device path to ConIn.
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//
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@@ -916,6 +918,8 @@ PlatformBootManagerBeforeConsole (
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//
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FilterAndProcess (&gVirtioDeviceProtocolGuid, IsVirtioSerial, SetupVirtioSerial);
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FilterAndProcess (&gEfiPciIoProtocolGuid, IsVirtioPciSerial, SetupVirtioSerial);
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+
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+ FallbackRngCheckAndInstall ();
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}
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/**
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@@ -982,6 +986,8 @@ PlatformBootManagerAfterConsole (
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BOOLEAN Uninstall;
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BOOLEAN ShellEnabled;
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+ FallbackRngPrintWarning ();
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+
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//
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// Show the splash screen.
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//
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diff --git a/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBootManagerLib.inf b/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBootManagerLib.inf
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index 9e89556b14..8ccd306780 100644
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--- a/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBootManagerLib.inf
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+++ b/OvmfPkg/Library/PlatformBootManagerLibLight/PlatformBootManagerLib.inf
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@@ -27,6 +27,8 @@
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PlatformBm.c
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PlatformBm.h
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QemuKernel.c
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+ ../PlatformBootManagerLib/FallbackRng.h
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+ ../PlatformBootManagerLib/FallbackRng.c
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[Packages]
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MdeModulePkg/MdeModulePkg.dec
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@@ -54,6 +56,7 @@
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UefiLib
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UefiRuntimeServicesTableLib
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PlatformBootManagerCommonLib
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+ RngLib
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[FixedPcd]
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gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate
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@@ -72,6 +75,7 @@
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gRootBridgesConnectedEventGroupGuid
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gUefiShellFileGuid
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gUiAppFileGuid
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+ gEfiRngAlgorithmRaw
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[Protocols]
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gEfiFirmwareVolume2ProtocolGuid
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@@ -79,3 +83,4 @@
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gEfiMemoryAttributeProtocolGuid
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gEfiPciRootBridgeIoProtocolGuid
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gVirtioDeviceProtocolGuid
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+ gEfiRngProtocolGuid
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