WebM libvpx (aka the VP8 Codec SDK) before 0.9.5, as used in Google Chrome before 7.0.517.44, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via invalid frames.
https://rhn.redhat.com/errata/RHSA-2010-0999.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12198
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-4177
http://secunia.com/advisories/42908
http://secunia.com/advisories/42690
http://secunia.com/advisories/42118
http://secunia.com/advisories/42109
http://review.webmproject.org/gitweb?p=libvpx.git%3Ba=blob%3Bf=CHANGELOG
http://googlechromereleases.blogspot.com/2010/11/stable-channel-update.html