static void driver_set_config_work(struct work_struct *work)
{
	struct set_config_request *req =
		container_of(work, struct set_config_request, work);
	struct usb_device *udev = req->udev;

	usb_lock_device(udev);
	spin_lock(&set_config_lock);
	list_del(&req->node);
	spin_unlock(&set_config_lock);

	if (req->config >= -1)		/* Is req still valid? */
		usb_set_configuration(udev, req->config);
	usb_unlock_device(udev);
	usb_put_dev(udev);
	kfree(req);
}

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.