static void cxusb_d680_dmb_drain_message(struct dvb_usb_device *d)
{
	int       ep = d->props.generic_bulk_ctrl_endpoint;
	const int timeout = 100;
	const int junk_len = 32;
	u8        *junk;
	int       rd_count;

	/* Discard remaining data in video pipe */
	junk = kmalloc(junk_len, GFP_KERNEL);
	if (!junk)
		return;
	while (1) {
		if (usb_bulk_msg(d->udev,
			usb_rcvbulkpipe(d->udev, ep),
			junk, junk_len, &rd_count, timeout) < 0)
			break;
		if (!rd_count)
			break;
	}
	kfree(junk);
}

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.