void ContainerNode::setHovered(bool over)
{
    if (over == hovered()) return;

    Node::setHovered(over);

    if (renderer()) {
        if (renderer()->style()->affectedByHoverRules())
            setNeedsStyleRecalc();
        if (renderer() && renderer()->style()->hasAppearance())
            renderer()->theme()->stateChanged(renderer(), HoverState);
    }
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.