FreeBSD Errata Notice FreeBSD-EN-23:09.freebsd-update
6 September, 2023 by errata-notices@freebsd.org | freebsd
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
=============================================================================
FreeBSD-EN-23:09.freebsd-update Errata Notice
The FreeBSD Project
Topic: freebsd-update incorrectly merges files on upgrade
Category: core
Module: freebsd-update
Announced: 2023-09-06
Affects: FreeBSD 13.2
Corrected: 2023-05-16 21:34:10 UTC (stable/13, 13.2-STABLE)
2023-09-06 16:56:24 UTC (releng/13.2, 13.2-RELEASE-p3)
For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit
<URL:https://security.FreeBSD.org/>.
I. Background
freebsd-update provides binary updates for supported releases of FreeBSD on
amd64, arm64, and i386.
II. Problem Description
freebsd-update incorrectly deleted files in /etc/ in the event the file to be
updated matched the new release and was different than the old release. This
has not been an issue previously because the $FreeBSD$ tag expansion from
subversion virtually guaranteed the existing file was going to be different
from the new release. With the conversion to git in the 13.x releases,
$FreeBSD$ is no longer expanded, making it much more likely that a file would
find this issue.
III. Impact
Unmodified files in /etc/ may be deleted on running freebsd-update upgrade.
IV. Workaround
No workaround is available.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date.
Perform one of the following:
1) To update your system via a binary patch:
Systems running a RELEASE version of FreeBSD on the amd64, i386, or
(on FreeBSD 13 and later) arm64 platforms can be updated via the
freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
2) To update your system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/EN-23:09/freebsd-update.patch
# fetch https://security.FreeBSD.org/patches/EN-23:09/freebsd-update.patch.asc
# gpg --verify freebsd-update.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
VI. Correction details
This issue is corrected by the corresponding Git commit hash or Subversion
revision number in the following stable and release branches:
Branch/path Hash Revision
- -------------------------------------------------------------------------
stable/13/ 866e5c6b3ce7 stable/13-n255386
releng/13.2/ 0b39d9de2e71 releng/13.2-n254628
- -------------------------------------------------------------------------
Run the following command to see which files were modified by a
particular commit:
# git show --stat <commit hash>
Or visit the following URL, replacing NNNNNN with the hash:
<URL:https://cgit.freebsd.org/src/commit/?id=NNNNNN>
To determine the commit count in a working tree (for comparison against
nNNNNNN in the table above), run:
# git rev-list --count --first-parent HEAD
VII. References
<URL:https://reviews.freebsd.org/D39973>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-23:09.freebsd-update.asc>
-----BEGIN PGP SIGNATURE-----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GZ0v
-----END PGP SIGNATURE-----