The Web Audio implementation in Google Chrome before 27.0.1453.93 allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via unknown vectors.
googlechromereleases.blogspot.com/2013/05/stable-channel-release.html
www.debian.org/security/2013/dsa-2695
code.google.com/p/chromium/issues/detail?id=179522
code.google.com/p/chromium/issues/detail?id=188092
code.google.com/p/chromium/issues/detail?id=222136
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16354