Google Chrome before 21.0.1180.57 on Mac OS X and Linux, and before 21.0.1180.60 on Windows and Chrome Frame, does not request user confirmation before continuing a large series of downloads, which allows user-assisted remote attackers to cause a denial of service (resource consumption) via a crafted web site.
Gentoo Linux Security Advisory 201208-3 - Multiple vulnerabilities have been reported in Chromium, some of which may allow execution of arbitrary code. Versions less than 21.0.1180.57 are affected.