CVE 2014-7925
Use-after-free vulnerability in the WebAudio implementation in Blink, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that trigger an audio-rendering thread in which AudioNode data is improperly maintained.
See the 
CVE page on Mitre.org
for more details.
