static int lg_ultrax_remote_mapping(struct hid_input *hi,
		struct hid_usage *usage, unsigned long **bit, int *max)
{
	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR)
		return 0;

	set_bit(EV_REP, hi->input->evbit);
	switch (usage->hid & HID_USAGE) {
	/* Reported on Logitech Ultra X Media Remote */
	case 0x004: lg_map_key_clear(KEY_AGAIN);	break;
	case 0x00d: lg_map_key_clear(KEY_HOME);		break;
	case 0x024: lg_map_key_clear(KEY_SHUFFLE);	break;
	case 0x025: lg_map_key_clear(KEY_TV);		break;
	case 0x026: lg_map_key_clear(KEY_MENU);		break;
	case 0x031: lg_map_key_clear(KEY_AUDIO);	break;
	case 0x032: lg_map_key_clear(KEY_TEXT);		break;
	case 0x033: lg_map_key_clear(KEY_LAST);		break;
	case 0x047: lg_map_key_clear(KEY_MP3);		break;
	case 0x048: lg_map_key_clear(KEY_DVD);		break;
	case 0x049: lg_map_key_clear(KEY_MEDIA);	break;
	case 0x04a: lg_map_key_clear(KEY_VIDEO);	break;
	case 0x04b: lg_map_key_clear(KEY_ANGLE);	break;
	case 0x04c: lg_map_key_clear(KEY_LANGUAGE);	break;
	case 0x04d: lg_map_key_clear(KEY_SUBTITLE);	break;
	case 0x051: lg_map_key_clear(KEY_RED);		break;
	case 0x052: lg_map_key_clear(KEY_CLOSE);	break;

	default:
		return 0;
	}
	return 1;
}

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.