• [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-20:09.igb

    From FreeBSD Errata Notices@21:1/5 to All on Tue May 12 20:00:01 2020
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    ============================================================================= FreeBSD-EN-20:09.igb Errata Notice
    The FreeBSD Project

    Topic: igb interfaces fail to switch to inactive state

    Category: core
    Module: kernel
    Announced: 2020-05-12
    Affects: FreeBSD 12.1
    Corrected: 2019-10-24 14:18:06 UTC (stable/12, 12.1-STABLE)
    2020-05-12 16:46:14 UTC (releng/12.1, 12.1-RELEASE-p5)

    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

    The igb driver supports Intel Gigabit Ethernet interfaces.

    II. Problem Description

    The igb driver does not detect link loss, and the interface does not
    transition to "inactive" upon link loss.

    III. Impact

    Incorrect link state may lead to system-level misbehaviour (for example, lagg interfaces may not transition to an alternate interface) and may cause confusion for system administrators.

    IV. Workaround

    Bringing the interface down and back up (e.g., "ifconfig igb0 down" followed
    by "ifconfig igb0 up") may cause the status to correctly change to inactive. Systems not using interfaces supported by the igb driver are not affected.

    V. Solution

    Upgrade your system to a supported FreeBSD stable or release / security
    branch (releng) dated after the correction date, and reboot.

    Perform one of the following:

    1) To update your system via a binary patch:

    Systems running a RELEASE version of FreeBSD on the i386 or amd64
    platforms can be updated via the freebsd-update(8) utility:

    # freebsd-update fetch
    # freebsd-update install
    # shutdown -r +10min "Rebooting for errata update"

    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-20:09/igb.patch
    # fetch https://security.FreeBSD.org/patches/EN-20:09/igb.patch.asc
    # gpg --verify igb.patch.asc

    b) Apply the patch. Execute the following commands as root:

    # cd /usr/src
    # patch < /path/to/patch

    c) Recompile your kernel as described in <URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
    system.

    VI. Correction details

    The following list contains the correction revision numbers for each
    affected branch.

    Branch/path Revision
    - ------------------------------------------------------------------------- stable/12/ r354021 releng/12.1/ r360970
    - -------------------------------------------------------------------------

    To see which files were modified by a particular revision, run the
    following command, replacing NNNNNN with the revision number, on a
    machine with Subversion installed:

    # 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=236724>

    The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-20:09.igb.asc> -----BEGIN PGP SIGNATURE-----

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