static void hid_process_event(struct hid_device *hid, struct hid_field *field,
		struct hid_usage *usage, __s32 value, int interrupt)
{
	struct hid_driver *hdrv = hid->driver;
	int ret;

	if (!list_empty(&hid->debug_list))
		hid_dump_input(hid, usage, value);

	if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
		ret = hdrv->event(hid, field, usage, value);
		if (ret != 0) {
			if (ret < 0)
				hid_err(hid, "%s's event failed with %d\n",
						hdrv->name, ret);
			return;
		}
	}

	if (hid->claimed & HID_CLAIMED_INPUT)
		hidinput_hid_event(hid, field, usage, value);
	if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
		hid->hiddev_hid_event(hid, field, usage, value);
}

The product reads data past the end, or before the beginning, of the intended buffer.