core/loader/ImageLoader.cpp in Blink, as used in Google Chrome before 44.0.2403.89, does not properly determine the V8 context of a microtask, which allows remote attackers to bypass Content Security Policy (CSP) restrictions by providing an image from an unintended source.
44.0.2403.89-0ubuntu0.14.04.1.10951.8.4-0ubuntu0.14.04.2