PassRefPtr<RenderStyle> Element::styleForRenderer()
{
    if (hasCustomStyleCallbacks()) {
        if (RefPtr<RenderStyle> style = customStyleForRenderer())
            return style.release();
    }

    return originalStyleForRenderer();
}

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.