void usb_free_coherent(struct usb_device *dev, size_t size, void *addr,
		       dma_addr_t dma)
{
	if (!dev || !dev->bus)
		return;
	if (!addr)
		return;
	hcd_buffer_free(dev->bus, size, addr, dma);
}

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.