static int logi_dj_probe(struct hid_device *hdev,
			 const struct hid_device_id *id)
{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct dj_receiver_dev *djrcv_dev;
	int retval;

	if (is_dj_device((struct dj_device *)hdev->driver_data))
		return -ENODEV;

	dbg_hid("%s called for ifnum %d\n", __func__,
		intf->cur_altsetting->desc.bInterfaceNumber);

	/* Ignore interfaces 0 and 1, they will not carry any data, dont create
	 * any hid_device for them */
	if (intf->cur_altsetting->desc.bInterfaceNumber !=
	    LOGITECH_DJ_INTERFACE_NUMBER) {
		dbg_hid("%s: ignoring ifnum %d\n", __func__,
			intf->cur_altsetting->desc.bInterfaceNumber);
		return -ENODEV;
	}

	/* Treat interface 2 */

	djrcv_dev = kzalloc(sizeof(struct dj_receiver_dev), GFP_KERNEL);
	if (!djrcv_dev) {
		dev_err(&hdev->dev,
			"%s:failed allocating dj_receiver_dev\n", __func__);
		return -ENOMEM;
	}
	djrcv_dev->hdev = hdev;
	INIT_WORK(&djrcv_dev->work, delayedwork_callback);
	spin_lock_init(&djrcv_dev->lock);
	if (kfifo_alloc(&djrcv_dev->notif_fifo,
			DJ_MAX_NUMBER_NOTIFICATIONS * sizeof(struct dj_report),
			GFP_KERNEL)) {
		dev_err(&hdev->dev,
			"%s:failed allocating notif_fifo\n", __func__);
		kfree(djrcv_dev);
		return -ENOMEM;
	}
	hid_set_drvdata(hdev, djrcv_dev);

	/* Call  to usbhid to fetch the HID descriptors of interface 2 and
	 * subsequently call to the hid/hid-core to parse the fetched
	 * descriptors, this will in turn create the hidraw and hiddev nodes
	 * for interface 2 of the receiver */
	retval = hid_parse(hdev);
	if (retval) {
		dev_err(&hdev->dev,
			"%s:parse of interface 2 failed\n", __func__);
		goto hid_parse_fail;
	}

	if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, REPORT_ID_DJ_SHORT,
				 0, DJREPORT_SHORT_LENGTH - 1)) {
		retval = -ENODEV;
		goto hid_parse_fail;
	}

	/* Starts the usb device and connects to upper interfaces hiddev and
	 * hidraw */
	retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (retval) {
		dev_err(&hdev->dev,
			"%s:hid_hw_start returned error\n", __func__);
		goto hid_hw_start_fail;
	}

	retval = logi_dj_recv_switch_to_dj_mode(djrcv_dev, 0);
	if (retval < 0) {
		dev_err(&hdev->dev,
			"%s:logi_dj_recv_switch_to_dj_mode returned error:%d\n",
			__func__, retval);
		goto switch_to_dj_mode_fail;
	}

	/* This is enabling the polling urb on the IN endpoint */
	retval = hid_hw_open(hdev);
	if (retval < 0) {
		dev_err(&hdev->dev, "%s:hid_hw_open returned error:%d\n",
			__func__, retval);
		goto llopen_failed;
	}

	/* Allow incoming packets to arrive: */
	hid_device_io_start(hdev);

	retval = logi_dj_recv_query_paired_devices(djrcv_dev);
	if (retval < 0) {
		dev_err(&hdev->dev, "%s:logi_dj_recv_query_paired_devices "
			"error:%d\n", __func__, retval);
		goto logi_dj_recv_query_paired_devices_failed;
	}

	return retval;

logi_dj_recv_query_paired_devices_failed:
	hid_hw_close(hdev);

llopen_failed:
switch_to_dj_mode_fail:
	hid_hw_stop(hdev);

hid_hw_start_fail:
hid_parse_fail:
	kfifo_free(&djrcv_dev->notif_fifo);
	kfree(djrcv_dev);
	hid_set_drvdata(hdev, NULL);
	return retval;

}

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.