Google Chrome before 2.0.172.37 allows attackers to leverage renderer access to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors that trigger excessive memory allocation.
https://exchange.xforce.ibmcloud.com/vulnerabilities/51802
http://www.vupen.com/english/advisories/2009/1924
http://www.securityfocus.com/bid/35723
http://secunia.com/advisories/35844
http://googlechromereleases.blogspot.com/2009/07/stable-beta-update-bug-fixes.html