static int gs_usb_set_phys_id(struct net_device *dev,
			      enum ethtool_phys_id_state state)
{
	int rc = 0;

	switch (state) {
	case ETHTOOL_ID_ACTIVE:
		rc = gs_usb_set_identify(dev, GS_CAN_IDENTIFY_ON);
		break;
	case ETHTOOL_ID_INACTIVE:
		rc = gs_usb_set_identify(dev, GS_CAN_IDENTIFY_OFF);
		break;
	default:
		break;
	}

	return rc;
}

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.