Your message dated Sun, 03 May 2020 22:17:10 +0000
with message-id <[email protected]>
and subject line Bug#958397: fixed in systemd 241-7~deb10u4
has caused the Debian Bug report #958397,
regarding Missing 60-block.rules breaks grub-installer
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
958397: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958397
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: udev-udeb
Version: 241-7~deb10u3
Control: found -1 232-25+deb9u12
Control: unarchive 852323
X-Debbugs-CC: [email protected]
Hello,
Udev has a rule with OPTIONS+="watch" to generate an event and update
symlinks in /dev/disk/ when a block device is written to. In Jessie, the
rule was in /lib/udev/rules.d/60-persistent-storage.rules. In Stretch
and Buster, it was moved to /lib/udev/rules.d/60-block.rules. However
/lib/udev/rules.d/60-block.rules was *not* included in :
- the initramfs hook script /usr/share/initramfs-tools/hooks/udev,
therefore in the initramfs built by update-initramfs
- the udev-udeb package
- the Debian installer initrd.gz (I guess it uses udev-udeb)
The most visible consequence is in the Debian installer. When a device
is formatted, symbolic links pointing to that device in /dev/disk/ are
not updated immediately. Then if the symlink pointing to the root device
in /dev/disk/by-uuid/ is missing or wrong, update-grub/grub-mkconfig
puts the root device name instead of the UUID in the root= kernel
parameter (see /etc/grub.d/10_linux). Drive and partition device names
are unreliable and may change at each boot, causing the boot to fail.
The following bugs may be related to this issue :
852323
863815
876866
925556
Steps to reproduce the issue :
Boot the Debian installer.
Select "advanced options" > "Expert install".
Follow steps up to "Partition disks".
Select manual partitioning.
Create or select and format a partition for /.
Do not create or use any swaps.
Install the base system.
Skip "Configure the package manager" and "Select and install software".
Install the GRUB boot loader.
Jump into a shell.
Check the symlink pointing to the root partition in /dev/disk/by-uuid/
is missing or wrong.
Check that /target/boot/grub/grub.cfg "linux" lines have
root=/dev/<partition> instead of root=UUID=<uuid>.
Suggested fix :
The issue could be worked around by executing "udevadm trigger" to
update symlinks at a proper time after formatting the root filesystem
and before installing GRUB. This is actually what seems to happen at the
"select and install software" step. But I think is is easier, safer and
cleaner to include /lib/udev/rules.d/60-block.rules and fix the root
cause than to rely on executing "udevadm trigger" at the proper time.
--- End Message ---
--- Begin Message ---
Source: systemd
Source-Version: 241-7~deb10u4
Done: Michael Biebl <[email protected]>
We believe that the bug you reported is fixed in the latest version of
systemd, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Michael Biebl <[email protected]> (supplier of updated systemd package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Mon, 27 Apr 2020 19:02:57 +0200
Source: systemd
Architecture: source
Version: 241-7~deb10u4
Distribution: buster
Urgency: medium
Maintainer: Debian systemd Maintainers
<[email protected]>
Changed-By: Michael Biebl <[email protected]>
Closes: 950732 958397
Changes:
systemd (241-7~deb10u4) buster; urgency=medium
.
* polkit: when authorizing via PolicyKit re-resolve callback/userdata
instead of caching it.
This fixes a heap use-after-free vulnerability in systemd, when
asynchronous PolicyKit queries are performed while handling DBus messages.
CVE-2020-1712 (Closes: #950732)
* Install 60-block.rules in udev-udeb and initramfs-tools.
The block device rules were split out from 60-persistent-storage.rules
into its own rules file in v220. Those rules ensure that change events
are emitted and the udev db is updated after metadata changes.
Thanks to Pascal Hambourg (Closes: #958397)
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