WebKit: UXSS via Document::prepareForDestruction and CachedFrame

WebKit: UXSS via Document::prepareForDestruction and CachedFrame Here's a snippet of Document::prepareForDestruction void Document::prepareForDestruction if mhasPreparedForDestruction return; ... detachFromFrame; mhasPreparedForDestruction = true; Document::prepareForDestruction is called on the...