static int virtcons_freeze(struct virtio_device *vdev)
{
	struct ports_device *portdev;
	struct port *port;

	portdev = vdev->priv;

	vdev->config->reset(vdev);

	virtqueue_disable_cb(portdev->c_ivq);
	cancel_work_sync(&portdev->control_work);
	cancel_work_sync(&portdev->config_work);
	/*
	 * Once more: if control_work_handler() was running, it would
	 * enable the cb as the last step.
	 */
	virtqueue_disable_cb(portdev->c_ivq);
	remove_controlq_data(portdev);

	list_for_each_entry(port, &portdev->ports, list) {
		virtqueue_disable_cb(port->in_vq);
		virtqueue_disable_cb(port->out_vq);
		/*
		 * We'll ask the host later if the new invocation has
		 * the port opened or closed.
		 */
		port->host_connected = false;
		remove_port_data(port);
	}
	remove_vqs(portdev);

	return 0;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.