static int dvico_bluebird_xc2028_callback(void *ptr, int component,
					  int command, int arg)
{
	struct dvb_usb_adapter *adap = ptr;
	struct dvb_usb_device *d = adap->dev;

	switch (command) {
	case XC2028_TUNER_RESET:
		deb_info("%s: XC2028_TUNER_RESET %d\n", __func__, arg);
		cxusb_bluebird_gpio_pulse(d, 0x01, 1);
		break;
	case XC2028_RESET_CLK:
		deb_info("%s: XC2028_RESET_CLK %d\n", __func__, arg);
		break;
	default:
		deb_info("%s: unknown command %d, arg %d\n", __func__,
			 command, arg);
		return -EINVAL;
	}

	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.