1. Forum
  2. Usenet
  3. COMP.UNIX.BSD.FREEBSD.ANN

  • [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-21:09.pf

    From FreeBSD Errata Notices@21:1/5 to All on Tue Apr 6 21:00:00 2021
    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA512

    ============================================================================= FreeBSD-EN-21:09.pf Errata Notice
    The FreeBSD Project

    Topic: net.pf.request_maxcount not settable from loader.conf(5)

    Category: core
    Module: pf
    Announced: 2021-04-06
    Affects: FreeBSD 12.2
    Corrected: 2020-12-15 08:29:45 UTC (stable/12, 12.2-STABLE)
    2021-04-06 19:21:24 UTC (releng/12.2, 12.2-RELEASE-p6)

    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

    pf(4) is an Internet Protocol packet filter originally written for OpenBSD.

    II. Problem Description

    The net.pf.request_maxcount sysctl provides an upper bound on the amount of memory used by pf(4) to store various types of state. Prior to FreeBSD 12.2 this sysctl was read-only and could only be adjusted via loader.conf(5). In FreeBSD 12.2, the sysctl was made writeable, but lost the ability to be adjusted from loader.conf(5).

    III. Impact

    pf(4) may fail to load filtering rules if they cause the default request_maxcount bound to be exceeded. Users that relied on loader.conf to increase the request_maxcount value could see their rules fail to load.

    IV. Workaround

    The value of request_maxcount may be set via sysctl.conf(5).

    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 i386 or amd64
    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-21:09/pf.patch
    # fetch https://security.FreeBSD.org/patches/EN-21:09/pf.patch.asc
    # gpg --verify pf.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

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

    Branch/path Revision
    - ------------------------------------------------------------------------- stable/12/ r368656 releng/12.2/ r369554
    - -------------------------------------------------------------------------

    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

    The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-21:09.pf.asc> -----BEGIN PGP SIGNATURE-----

    iQIzBAEBCgAdFiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAmBswB8ACgkQ05eS9J6n 5cLYFw//fkTpjSXiflCHENinkk3u72W8Pxw4vvhDl9DBSHUdYi+fzB6t70xxUcnH wsjJcyMe1nqU7BVYFYo+aIkDL2yeW+PlJVrVfLcuWn8OwX7R0WbCM13EF75WZmlM Ty6YWPZkqYAWc0lbBYWiEtW+f6m5FTgdlvsXnTBENiz3iX2ddNkFK+qcEY9sasiJ HjsIoM1bs41YAgiOByyuh1xqMr+ieB4QQQ3QAbBmkqqPqBu1Nk0Xcpmos0sBf6Sn dSPDBMcKfJ4VelSGBnn98bXjjyLeiwbfBhNceCbI8eIgulTWboMJHg9XoUWMwWhJ 314OOq0D0CssWj9136dKLxQc+gWyu5xfszenfbA1k9rrFY5uKOBVUMgK8b9meWfH WX1CscDTYe4wCp/YpT/oU31PJfm0foFNWnOel7hDrlNwe0t+ElVX56xyy19BLQ/9 tgZ1CIZv6IihMxxBDnayU/SUVB5bJxfwHXZb845xjKB+owNYaw5pwHhEgLYWklAL A6a6Lja5dzVn1KsrHfUb11KEzWvUvtqp0y6vaZv6UTSLI9FfaSL/xA6uy3Ft/r/E OvD0qL/ShKmA/jvLG6vxJe0XQjU9JMI/FViPrs4YLCpFymRXthokoXoD1FyK6Hgn aMBdWTVEGHuQFG37OZIxr7AvefR0d3MXPbReXVKnn367VdbZ1lw=
    =7QHR
    -----END PGP SIGNATURE-----
    _______________________________________________
    freebsd-announce@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-announce
    To unsubscribe, send any mail to "freebsd-announce-unsubscribe@freebsd.org"

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)