static int m88rs2000_frontend_attach(struct dvb_usb_adapter *d)
{
	u8 obuf[] = { 0x51 };
	u8 ibuf[] = { 0 };

	if (dvb_usb_generic_rw(d->dev, obuf, 1, ibuf, 1, 0) < 0)
		err("command 0x51 transfer failed.");

	d->fe_adap[0].fe = dvb_attach(m88rs2000_attach, &s421_m88rs2000_config,
					&d->dev->i2c_adap);

	if (d->fe_adap[0].fe == NULL)
		return -EIO;

	if (dvb_attach(ts2020_attach, d->fe_adap[0].fe,
				&dw2104_ts2020_config,
				&d->dev->i2c_adap)) {
		info("Attached RS2000/TS2020!");
		return 0;
	}

	info("Failed to attach RS2000/TS2020!");
	return -EIO;
}
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.