static int dvb_usbv2_adapter_init(struct dvb_usb_device *d)
{
	struct dvb_usb_adapter *adap;
	int ret, i, adapter_count;

	/* resolve adapter count */
	adapter_count = d->props->num_adapters;
	if (d->props->get_adapter_count) {
		ret = d->props->get_adapter_count(d);
		if (ret < 0)
			goto err;

		adapter_count = ret;
	}

	for (i = 0; i < adapter_count; i++) {
		adap = &d->adapter[i];
		adap->id = i;
		adap->props = &d->props->adapter[i];

		/* speed - when running at FULL speed we need a HW PID filter */
		if (d->udev->speed == USB_SPEED_FULL &&
				!(adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
			dev_err(&d->udev->dev,
					"%s: this USB2.0 device cannot be run on a USB1.1 port (it lacks a hardware PID filter)\n",
					KBUILD_MODNAME);
			ret = -ENODEV;
			goto err;
		} else if ((d->udev->speed == USB_SPEED_FULL &&
				adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
				(adap->props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
			dev_info(&d->udev->dev,
					"%s: will use the device's hardware PID filter (table count: %d)\n",
					KBUILD_MODNAME,
					adap->props->pid_filter_count);
			adap->pid_filtering  = 1;
			adap->max_feed_count = adap->props->pid_filter_count;
		} else {
			dev_info(&d->udev->dev,
					"%s: will pass the complete MPEG2 transport stream to the software demuxer\n",
					KBUILD_MODNAME);
			adap->pid_filtering  = 0;
			adap->max_feed_count = 255;
		}

		if (!adap->pid_filtering && dvb_usb_force_pid_filter_usage &&
				adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
			dev_info(&d->udev->dev,
					"%s: PID filter enabled by module option\n",
					KBUILD_MODNAME);
			adap->pid_filtering  = 1;
			adap->max_feed_count = adap->props->pid_filter_count;
		}

		ret = dvb_usbv2_adapter_stream_init(adap);
		if (ret)
			goto err;

		ret = dvb_usbv2_adapter_dvb_init(adap);
		if (ret)
			goto err;

		ret = dvb_usbv2_adapter_frontend_init(adap);
		if (ret)
			goto err;

		/* use exclusive FE lock if there is multiple shared FEs */
		if (adap->fe[1])
			adap->dvb_adap.mfe_shared = 1;
	}

	return 0;
err:
	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
	return ret;
}

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.