WebKit CSSCrossfadeValue::crossfadeChanged Use-After-Free Vulnerability

WebKit: Use-after-free of RenderMathMLToken in CSSCrossfadeValue::crossfadeChanged There is a use-after-free of a RenderMathMLToken object in CSSCrossfadeValue::crossfadeChanged. CSSCrossfadeValue extends CSSImageGeneratorValue. CSSImageGeneratorValue keeps a HashCountedSet of clients mclients of...