mkconfig: More hardening to prevent overwriting grub cfg stub
Simplified os detection and remove mountpoint to accommodate hybrid VMs Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
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Nicolas Frayer
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27
0272-grub2-mkconfig-Simplify-os_name-detection.patch
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27
0272-grub2-mkconfig-Simplify-os_name-detection.patch
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@ -0,0 +1,27 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrew Lukoshko <alukoshko@almalinux.org>
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Date: Wed, 31 Jul 2024 16:06:10 +0000
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Subject: [PATCH] grub2-mkconfig: Simplify os_name detection
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---
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util/grub-mkconfig.in | 7 +------
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1 file changed, 1 insertion(+), 6 deletions(-)
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diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
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index efa36cc45a69..8b7883072e46 100644
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--- a/util/grub-mkconfig.in
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+++ b/util/grub-mkconfig.in
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@@ -109,12 +109,7 @@ do
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esac
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done
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-os_name=$(grep '^ID=' /etc/os-release | sed 's/ID=//')
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-if test "$os_name" = '"rhel"'; then
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- os_name=redhat
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-elif test "$os_name" = '"centos"'; then
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- os_name=centos
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-fi
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+os_name=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/' -e 's/\"//g')
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if test "x${grub_cfg}" = "x/boot/efi/EFI/$os_name/grub.cfg" &&\
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mountpoint -q /boot/efi; then
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gettext_printf "Running \`grub2-mkconfig -o %s' will overwrite the GRUB wrapper.\n" "$grub_cfg" 1>&2
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@ -0,0 +1,29 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nicolas Frayer <nfrayer@redhat.com>
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Date: Thu, 1 Aug 2024 11:13:20 +0200
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Subject: [PATCH] grub/mkconfig: Remove check for mount point for grub cfg stub
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Remove mountpoint when checking whether or not the grub cfg stub
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exists and add -s to the test. This should cover scenarios where
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the ESP doesn't have a seperate partition but still uses a grub
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cfg stub
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Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
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---
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util/grub-mkconfig.in | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
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index 8b7883072e46..31a72a39e0cf 100644
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--- a/util/grub-mkconfig.in
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+++ b/util/grub-mkconfig.in
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@@ -110,8 +110,7 @@ do
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done
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os_name=$(grep ^ID= /etc/os-release | sed -e 's/^ID=//' -e 's/rhel/redhat/' -e 's/\"//g')
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-if test "x${grub_cfg}" = "x/boot/efi/EFI/$os_name/grub.cfg" &&\
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- mountpoint -q /boot/efi; then
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+if test -s "${grub_cfg}" && test "x${grub_cfg}" = "x/boot/efi/EFI/$os_name/grub.cfg"; then
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gettext_printf "Running \`grub2-mkconfig -o %s' will overwrite the GRUB wrapper.\n" "$grub_cfg" 1>&2
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gettext_printf "Please run \`grub2-mkconfig -o /boot/grub2/grub.cfg' instead to update grub.cfg.\n" 1>&2
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gettext_printf "GRUB configuration file was not updated.\n" 1>&2
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@ -1,40 +0,0 @@
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nicolas Frayer <nfrayer@redhat.com>
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Date: Tue, 16 Jul 2024 11:11:43 +0200
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Subject: [PATCH] grub2-mkconfig: Ensure grub cfg stub is not overwritten
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/boot/efi/EFI/$os_name/grub.cfg contains a grub cfg stub
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that should not be overwritten by grub2-mkconfig.
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Ensure that we prevent this from happening.
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Signed-off-by: Marta Lewandowska <mlewando@redhat.com>
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Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
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---
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util/grub-mkconfig.in | 14 ++++++++++++++
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1 file changed, 14 insertions(+)
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diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
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index fb382b648b87..efa36cc45a69 100644
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--- a/util/grub-mkconfig.in
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+++ b/util/grub-mkconfig.in
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@@ -109,6 +109,20 @@ do
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esac
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done
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+os_name=$(grep '^ID=' /etc/os-release | sed 's/ID=//')
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+if test "$os_name" = '"rhel"'; then
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+ os_name=redhat
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+elif test "$os_name" = '"centos"'; then
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+ os_name=centos
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+fi
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+if test "x${grub_cfg}" = "x/boot/efi/EFI/$os_name/grub.cfg" &&\
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+ mountpoint -q /boot/efi; then
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+ gettext_printf "Running \`grub2-mkconfig -o %s' will overwrite the GRUB wrapper.\n" "$grub_cfg" 1>&2
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+ gettext_printf "Please run \`grub2-mkconfig -o /boot/grub2/grub.cfg' instead to update grub.cfg.\n" 1>&2
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+ gettext_printf "GRUB configuration file was not updated.\n" 1>&2
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+ exit 1
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+fi
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+
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if [ "x$EUID" = "x" ] ; then
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EUID=`id -u`
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fi
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@ -269,3 +269,5 @@ Patch0268: 0268-Set-non-executable-stack-sections-on-EFI-assembly-fi.patch
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Patch0269: 0269-grub-mkconfig.in-turn-off-executable-owner-bit.patch
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Patch0270: 0270-kern-ieee1275-init-Add-IEEE-1275-Radix-support-for-K.patch
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Patch0271: 0271-grub2-mkconfig-Ensure-grub-cfg-stub-is-not-overwritt.patch
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Patch0272: 0272-grub2-mkconfig-Simplify-os_name-detection.patch
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Patch0273: 0273-grub-mkconfig-Remove-check-for-mount-point-for-grub-.patch
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@ -17,7 +17,7 @@
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Name: grub2
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Epoch: 1
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Version: 2.12
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Release: 1%{?dist}
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Release: 2%{?dist}
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Summary: Bootloader with support for Linux, Multiboot and more
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License: GPL-3.0-or-later
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URL: http://www.gnu.org/software/grub/
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@ -560,6 +560,9 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
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%endif
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%changelog
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* Tue Aug 6 2024 Nicolas Frayer <nfrayer@redhat.com> - 2.12-2
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- mkconfig: More hardening to prevent overwriting grub cfg stub
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* Mon Aug 5 2024 Leo Sandoval <lsandova@redhat.com> - 2.12-1
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- Rebased to release grub2-2.12
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