#fixed code
                                @Override
    public boolean updateAttributes() {
        try {
            File ifDir = new File(String.format("/sys/class/net/%s/statistics", getName()));
            if (!ifDir.isDirectory()) {
                return false;
            }
        } catch (SecurityException e) {
            return false;
        }
        String ifTypePath = String.format("/sys/class/net/%s/type", getName());
        String carrierPath = String.format("/sys/class/net/%s/carrier", getName());
        String txBytesPath = String.format("/sys/class/net/%s/statistics/tx_bytes", getName());
        String rxBytesPath = String.format("/sys/class/net/%s/statistics/rx_bytes", getName());
        String txPacketsPath = String.format("/sys/class/net/%s/statistics/tx_packets", getName());
        String rxPacketsPath = String.format("/sys/class/net/%s/statistics/rx_packets", getName());
        String txErrorsPath = String.format("/sys/class/net/%s/statistics/tx_errors", getName());
        String rxErrorsPath = String.format("/sys/class/net/%s/statistics/rx_errors", getName());
        String collisionsPath = String.format("/sys/class/net/%s/statistics/collisions", getName());
        String rxDropsPath = String.format("/sys/class/net/%s/statistics/rx_dropped", getName());
        String ifSpeed = String.format("/sys/class/net/%s/speed", getName());

        this.timeStamp = System.currentTimeMillis();
        this.ifType = FileUtil.getIntFromFile(ifTypePath);
        this.connectorPresent = FileUtil.getIntFromFile(carrierPath) > 0;
        this.bytesSent = FileUtil.getUnsignedLongFromFile(txBytesPath);
        this.bytesRecv = FileUtil.getUnsignedLongFromFile(rxBytesPath);
        this.packetsSent = FileUtil.getUnsignedLongFromFile(txPacketsPath);
        this.packetsRecv = FileUtil.getUnsignedLongFromFile(rxPacketsPath);
        this.outErrors = FileUtil.getUnsignedLongFromFile(txErrorsPath);
        this.inErrors = FileUtil.getUnsignedLongFromFile(rxErrorsPath);
        this.collisions = FileUtil.getUnsignedLongFromFile(collisionsPath);
        this.inDrops = FileUtil.getUnsignedLongFromFile(rxDropsPath);
        long speedMiB = FileUtil.getUnsignedLongFromFile(ifSpeed);
        // speed may be -1 from file.
        this.speed = speedMiB < 0 ? 0 : speedMiB << 20;

        return true;
    }
#vulnerable code 
                                @Override
    public boolean updateAttributes() {
        try {
            File ifDir = new File(String.format("/sys/class/net/%s/statistics", getName()));
            if (!ifDir.isDirectory()) {
                return false;
            }
        } catch (SecurityException e) {
            return false;
        }
        String ifTypePath = String.format("/sys/class/net/%s/type", getName());
        String carrierPath = String.format("/sys/class/net/%s/carrier", getName());
        String txBytesPath = String.format("/sys/class/net/%s/statistics/tx_bytes", getName());
        String rxBytesPath = String.format("/sys/class/net/%s/statistics/rx_bytes", getName());
        String txPacketsPath = String.format("/sys/class/net/%s/statistics/tx_packets", getName());
        String rxPacketsPath = String.format("/sys/class/net/%s/statistics/rx_packets", getName());
        String txErrorsPath = String.format("/sys/class/net/%s/statistics/tx_errors", getName());
        String rxErrorsPath = String.format("/sys/class/net/%s/statistics/rx_errors", getName());
        String collisionsPath = String.format("/sys/class/net/%s/statistics/collisions", getName());
        String rxDropsPath = String.format("/sys/class/net/%s/statistics/rx_dropped", getName());
        String ifSpeed = String.format("/sys/class/net/%s/speed", getName());

        this.timeStamp = System.currentTimeMillis();
        this.ifType = FileUtil.getIntFromFile(ifTypePath);
        this.connectorPresent = FileUtil.getIntFromFile(carrierPath) > 0;
        this.bytesSent = FileUtil.getUnsignedLongFromFile(txBytesPath);
        this.bytesRecv = FileUtil.getUnsignedLongFromFile(rxBytesPath);
        this.packetsSent = FileUtil.getUnsignedLongFromFile(txPacketsPath);
        this.packetsRecv = FileUtil.getUnsignedLongFromFile(rxPacketsPath);
        this.outErrors = FileUtil.getUnsignedLongFromFile(txErrorsPath);
        this.inErrors = FileUtil.getUnsignedLongFromFile(rxErrorsPath);
        this.collisions = FileUtil.getUnsignedLongFromFile(collisionsPath);
        this.inDrops = FileUtil.getUnsignedLongFromFile(rxDropsPath);
        // speed may be negative from file. Convert to MiB.
        this.speed = FileUtil.getUnsignedLongFromFile(ifSpeed);
        this.speed = this.speed < 0 ? 0 : this.speed << 20;

        return true;
    } 
                            #location 36 
                            #vulnerability type THREAD_SAFETY_VIOLATION