CVE 2015-1258
Google Chrome before 43.0.2357.65 relies on libvpx code that was not built with an appropriate --size-limit value, which allows remote attackers to trigger a negative value for a size field, and consequently cause a denial of service or possibly have unspecified other impact, via a crafted frame size in VP9 video data.
See the 
CVE page on Mitre.org
for more details.
