PassRefPtr<Attr> Element::getAttributeNode(const AtomicString& localName)
{
    if (!elementData())
        return 0;
    synchronizeAttribute(localName);
    const Attribute* attribute = elementData()->getAttributeItem(localName, shouldIgnoreAttributeCase(this));
    if (!attribute)
        return 0;
    return ensureAttr(attribute->name());
}

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.