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  • FreeBSD Errata Notice FreeBSD-EN-22:09.freebsd-update

    From FreeBSD Errata Notices@21:1/5 to All on Tue Mar 15 20:00:05 2022
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    ============================================================================= FreeBSD-EN-22:09.freebsd-update Errata Notice
    The FreeBSD Project

    Topic: freebsd-update creating erroneous boot environments

    Category: core
    Module: freebsd-update
    Announced: 2022-03-15
    Affects: FreeBSD 12.3
    Corrected: 2022-02-15 06:09:41 UTC (stable/12, 12.3-STABLE)
    2022-03-15 18:17:55 UTC (releng/12.3, 12.3-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

    By default, freebsd-update(8) is configured to create new ZFS boot environments on systems that are compatible with bectl(8).

    II. Problem Description

    When updating a jail or another root that isn't the system root using -b, freebsd-update(8) will create a spurious boot environment despite the updated root not causing a change in the boot environment.

    III. Impact

    Users that have used freebsd-update(8) with the -b or -j flags may have some extra boot environments present on the system that did not meaningfully impact the boot environment.

    IV. Workaround

    No workaround is available. Systems with "CreateBootEnv" set to "no" in their /etc/freebsd-update.conf are not affected. Systems that do not use ZFS are also
    not affected.

    V. Solution

    Upgrade your system to a supported FreeBSD stable or release / security
    branch (releng) dated after the correction date. No reboot is required.

    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.

    [FreeBSD 12.3]
    # fetch https://security.FreeBSD.org/patches/EN-22:09/freebsd-update.patch
    # fetch https://security.FreeBSD.org/patches/EN-22:09/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/12/ r371637 releng/12.3/ r371743
    - -------------------------------------------------------------------------

    For FreeBSD 12 and earlier:

    Run the following command to see which files were modified by a particular revision, replacing NNNNNN with the revision number:

    # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base

    Or visit the following URL, replacing NNNNNN with the revision number:

    <URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>

    VII. References

    <URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261446>

    The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-22:09.freebsd-update.asc>
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