WebKit Element::setAttributeNodeNS Use-After-Free

WebKit: Element::setAttributeNodeNS UAF Here's a snippet of Element::setAttributeNodeNS. ExceptionOr Element::setAttributeNodeNSAttr& attrNode ... setAttributeInternalindex, attrNode.qualifiedName, attrNode.value, NotInSynchronizationOfLazyAttribute; attrNode.attachToElementthis;...