static int logi_dj_ll_parse(struct hid_device *hid)
{
	struct dj_device *djdev = hid->driver_data;
	unsigned int rsize = 0;
	char *rdesc;
	int retval;

	dbg_hid("%s\n", __func__);

	djdev->hdev->version = 0x0111;
	djdev->hdev->country = 0x00;

	rdesc = kmalloc(MAX_RDESC_SIZE, GFP_KERNEL);
	if (!rdesc)
		return -ENOMEM;

	if (djdev->reports_supported & STD_KEYBOARD) {
		dbg_hid("%s: sending a kbd descriptor, reports_supported: %x\n",
			__func__, djdev->reports_supported);
		rdcat(rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor));
	}

	if (djdev->reports_supported & STD_MOUSE) {
		dbg_hid("%s: sending a mouse descriptor, reports_supported: "
			"%x\n", __func__, djdev->reports_supported);
		rdcat(rdesc, &rsize, mse_descriptor, sizeof(mse_descriptor));
	}

	if (djdev->reports_supported & MULTIMEDIA) {
		dbg_hid("%s: sending a multimedia report descriptor: %x\n",
			__func__, djdev->reports_supported);
		rdcat(rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor));
	}

	if (djdev->reports_supported & POWER_KEYS) {
		dbg_hid("%s: sending a power keys report descriptor: %x\n",
			__func__, djdev->reports_supported);
		rdcat(rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor));
	}

	if (djdev->reports_supported & MEDIA_CENTER) {
		dbg_hid("%s: sending a media center report descriptor: %x\n",
			__func__, djdev->reports_supported);
		rdcat(rdesc, &rsize, media_descriptor, sizeof(media_descriptor));
	}

	if (djdev->reports_supported & KBD_LEDS) {
		dbg_hid("%s: need to send kbd leds report descriptor: %x\n",
			__func__, djdev->reports_supported);
	}

	retval = hid_parse_report(hid, rdesc, rsize);
	kfree(rdesc);

	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.