void usbip_pad_iso(struct usbip_device *ud, struct urb *urb)
{
	int np = urb->number_of_packets;
	int i;
	int actualoffset = urb->actual_length;

	if (!usb_pipeisoc(urb->pipe))
		return;

	/* if no packets or length of data is 0, then nothing to unpack */
	if (np == 0 || urb->actual_length == 0)
		return;

	/*
	 * if actual_length is transfer_buffer_length then no padding is
	 * present.
	 */
	if (urb->actual_length == urb->transfer_buffer_length)
		return;

	/*
	 * loop over all packets from last to first (to prevent overwritting
	 * memory when padding) and move them into the proper place
	 */
	for (i = np-1; i > 0; i--) {
		actualoffset -= urb->iso_frame_desc[i].actual_length;
		memmove(urb->transfer_buffer + urb->iso_frame_desc[i].offset,
			urb->transfer_buffer + actualoffset,
			urb->iso_frame_desc[i].actual_length);
	}
}

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.