libvorbis security update

CentOS Errata and Security Advisory CESA-2009:1219

The libvorbis packages contain runtime libraries for use in programs that
support Ogg Vorbis. Ogg Vorbis is a fully open, non-proprietary, patent-and
royalty-free, general-purpose compressed audio format.

An insufficient input validation flaw was found in the way libvorbis
processes the codec file headers (static mode headers and encoding books)
of the Ogg Vorbis audio file format (Ogg). A remote attacker could provide
a specially-crafted Ogg file that would cause a denial of service (memory
corruption and application crash) or, potentially, execute arbitrary code
with the privileges of an application using the libvorbis library when
opened by a victim. (CVE-2009-2663)

Users of libvorbis should upgrade to these updated packages, which contain
a backported patch to correct this issue. The desktop must be restarted
(log out, then log back in) for this update to take effect.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2009-August/078255.html
https://lists.centos.org/pipermail/centos-announce/2009-August/078256.html
https://lists.centos.org/pipermail/centos-announce/2009-August/078265.html
https://lists.centos.org/pipermail/centos-announce/2009-August/078266.html

Affected packages:
libvorbis
libvorbis-devel

Upstream details at:
https://access.redhat.com/errata/RHSA-2009:1219