From 89b61793d80bc2cb2abe47a7d0549466fb087d16 Mon Sep 17 00:00:00 2001
From: Johannes Meixner <jsmeix@suse.com>
Date: Fri, 12 Jan 2024 08:04:40 +0100
Subject: [PATCH] Make initrd accessible only by root (#3123)

Origin: https://github.com/rear/rear/commit/89b61793d80bc2cb2abe47a7d0549466fb087d16

In pack/GNU/Linux/900_create_initramfs.sh call
chmod 0600 "$TMP_DIR/$REAR_INITRD_FILENAME"
to let only 'root' access the ReaR initrd because
the ReaR recovery system in the initrd can contain secrets
(not by default but when certain things are explicitly
configured by the user like SSH keys without passphrase)
see https://github.com/rear/rear/issues/3122
and https://bugzilla.opensuse.org/show_bug.cgi?id=1218728
---
 usr/share/rear/pack/GNU/Linux/900_create_initramfs.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/usr/share/rear/pack/GNU/Linux/900_create_initramfs.sh b/usr/share/rear/pack/GNU/Linux/900_create_initramfs.sh
index 1e0c11039..12be718ed 100644
--- a/usr/share/rear/pack/GNU/Linux/900_create_initramfs.sh
+++ b/usr/share/rear/pack/GNU/Linux/900_create_initramfs.sh
@@ -125,4 +125,10 @@ case "$REAR_INITRD_COMPRESSION" in
         fi
         ;;
 esac
+
+# Only root should be allowed to access the initrd
+# because the ReaR recovery system can contain secrets
+# cf. https://github.com/rear/rear/issues/3122
+test -s "$TMP_DIR/$REAR_INITRD_FILENAME" && chmod 0600 "$TMP_DIR/$REAR_INITRD_FILENAME"
+
 popd >/dev/null
