FFMpeg is vulnerable to denial of service (DoS) and possibly other attacks. These attacks are possible because there is multiple off-by-one errors in libavcodec/vorbisdec.c.
git.videolan.org/?p=ffmpeg.git;a=commit;h=8c50704ebf1777bee76772c4835d9760b3721057
googlechromereleases.blogspot.com/2015/01/stable-update.html
lists.opensuse.org/opensuse-security-announce/2015-03/msg00005.html
rhn.redhat.com/errata/RHSA-2015-0093.html
secunia.com/advisories/62383
secunia.com/advisories/62575
secunia.com/advisories/62665
security.gentoo.org/glsa/glsa-201502-13.xml
www.securityfocus.com/bid/72288
www.securitytracker.com/id/1031623
www.ubuntu.com/usn/USN-2476-1
chromium.googlesource.com/chromium/third_party/ffmpeg/+/d4608b7c83f56b17f14fdd94990341f62bb52f92
code.google.com/p/chromium/issues/detail?id=419060
git.videolan.org/?p=ffmpeg.git;a=commit;h=8c50704ebf1777bee76772c4835d9760b3721057
security.gentoo.org/glsa/201603-06
www.ffmpeg.org/security.html