static int kye_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int ret;

	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "parse failed\n");
		goto err;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		hid_err(hdev, "hw start failed\n");
		goto err;
	}

	switch (id->product) {
	case USB_DEVICE_ID_KYE_EASYPEN_I405X:
	case USB_DEVICE_ID_KYE_MOUSEPEN_I608X:
	case USB_DEVICE_ID_KYE_EASYPEN_M610X:
		ret = kye_tablet_enable(hdev);
		if (ret) {
			hid_err(hdev, "tablet enabling failed\n");
			goto enabling_err;
		}
		break;
	case USB_DEVICE_ID_GENIUS_MANTICORE:
		/*
		 * The manticore keyboard needs to have all the interfaces
		 * opened at least once to be fully functional.
		 */
		if (hid_hw_open(hdev))
			hid_hw_close(hdev);
		break;
	}

	return 0;
enabling_err:
	hid_hw_stop(hdev);
err:
	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.