#fixed code
                                void openLinks(Session session)
    {
        // Codes_SRS_AMQPSESSIONDEVICEOPERATION_12_042: [The function shall do nothing if the session parameter is null.]
        if (session != null)
        {
            if (this.amqpsAuthenticatorState == AmqpsDeviceAuthenticationState.AUTHENTICATED)
            {
                synchronized (this.openLock)
                {
                    for (AmqpsDeviceOperations amqpDeviceOperation : this.amqpsDeviceOperationsMap.values())
                    {
                        amqpDeviceOperation.openLinks(session);
                    }
                }
            }
        }
    }
#vulnerable code 
                                boolean onLinkRemoteOpen(String linkName)
    {
        // Codes_SRS_AMQPSESSIONDEVICEOPERATION_12_024: [The function shall return true if any of the operation's link name is a match and return false otherwise.]
        if (this.amqpsAuthenticatorState == AmqpsDeviceAuthenticationState.AUTHENTICATED)
        {
            for (Map.Entry<MessageType, AmqpsDeviceOperations> entry : amqpsDeviceOperationsMap.entrySet())
            {
                if (entry.getValue().onLinkRemoteOpen(linkName))
                {
                    // If the link that is being opened is a sender link and the operation is a DeviceTwin operation, we will send a subscribe message on the opened link
                    if (entry.getKey() == MessageType.DEVICE_TWIN && linkName.equals(entry.getValue().getSenderLinkTag()))
                    {
                        // since we have already checked the message type, we can safely cast it
                        AmqpsDeviceTwin deviceTwinOperations = (AmqpsDeviceTwin)entry.getValue();
                        sendMessage(deviceTwinOperations.buildSubscribeToDesiredPropertiesProtonMessage(), entry.getKey(), deviceClientConfig.getDeviceId());
                    }

                    return true;
                }
            }
        }

        return false;
    } 
                            #location 4 
                            #vulnerability type THREAD_SAFETY_VIOLATION