[FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:13.vidcontrol

19/08/15, [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:13.vidcontrol
From: FreeBSD Errata Notices <errata-notices@freebsd.org>

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To: FreeBSD Errata Notices <errata-notices@freebsd.org>
Subject: [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-15:13.vidcontrol
From: FreeBSD Errata Notices <errata-notices@freebsd.org>
Date: Tue, 18 Aug 2015 20:15:41 +0000 (UTC)
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

=============================================================================
FreeBSD-EN-15:13.vidcontrol                                     Errata Notice
                                                          The FreeBSD Project

Topic:          Allow size argument to vidcontrol(1) for syscons(4)

Category:       core
Module:         vidcontrol
Announced:      2015-08-18
Credits:        Ed Maste
Affects:        FreeBSD 10.2-RELEASE
Corrected:      2015-08-04 15:15:06 UTC (stable/10, 10.2-STABLE)
                2015-08-18 19:30:17 UTC (releng/10.2, 10.2-RC3-p1)
                2015-08-18 19:30:17 UTC (releng/10.2, 10.2-RELEASE-p1)

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 vidcontrol(1) utility is used to set various options for the syscons(4) or
vt(4) console driver, such as video mode, colors, cursor shape, screen output
map, font, and screen saver timeout.

The vidcontrol(1) utility allows specifying a font size and font file as
arguments to the '-f' flag.  When no size or file are specified, vidcontrol(1)
the default font will be used.

II.  Problem Description

The vidcontrol(1) does not properly allow specifying the font size when
invoked from the command line.

III. Impact

The vidcontrol(1) utility will use the default font size, regardless of the
size specified as an argument to the '-f' flag.

IV.  Workaround

No workaround is available, but systems not using the vt(4) driver are not
affected.

V.   Solution

Perform one of the following:

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

2) To update your present 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

3) To update your present 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-15:13/vidcontrol.patch
# fetch https://security.FreeBSD.org/patches/EN-15:13/vidcontrol.patch.asc
# gpg --verify vidcontrol.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/10/                                                        r286291
releng/10.2/                                                      r286901
- -------------------------------------------------------------------------

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 Errata Notice is available at
https://security.FreeBSD.org/advisories/FreeBSD-EN-15:13.vidcontrol.asc

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