Program: 91002
Project: 91002
Buggy source:
private Transaction signInternal(UnsignedTransaction unsigned,Bip44AccountExternalSignature forAccount) throws BTChipException, TransactionOutputParsingException {
  Transaction unsignedtx;
  BTChipDongle.BTChipInput inputs[];
  Vector<byte[]> signatures;
  String outputAddress=null, amount, fees, commonPath, changePath="String_Node_Str";
  long totalSending=0;
  StandardTransactionBuilder.SigningRequest[] signatureInfo;
  String txpin="String_Node_Str";
  BTChipDongle.BTChipOutput outputData=null;
  ByteWriter rawOutputsWriter=new ByteWriter(1024);
  byte[] rawOutputs;
  if (!initialize()) {
    postErrorMessage("String_Node_Str");
    return null;
  }
  boolean isTEE=isTee();
  setState(Status.readyToScan,currentAccountState);
  if (isTEE) {
    try {
      int attempts=dongle.getVerifyPinRemainingAttempts();
      if (attempts == 0) {
        postErrorMessage("String_Node_Str");
        return null;
      }
    }
 catch (    BTChipException e) {
      if (e.getSW() == SW_CONDITIONS_NOT_SATISFIED) {
        postErrorMessage("String_Node_Str");
        return null;
      }
      if (e.getSW() == SW_HALTED) {
        LedgerTransportTEEProxy proxy=(LedgerTransportTEEProxy)getTransport().getTransport();
        try {
          proxy.close();
          proxy.init();
          int attempts=dongle.getVerifyPinRemainingAttempts();
          if (attempts == 0) {
            postErrorMessage("String_Node_Str");
            return null;
          }
        }
 catch (        BTChipException e1) {
          if (e1.getSW() == SW_CONDITIONS_NOT_SATISFIED) {
            postErrorMessage("String_Node_Str");
            return null;
          }
        }
catch (        Exception ignore) {
        }
      }
    }
  }
  signatureInfo=unsigned.getSignatureInfo();
  unsignedtx=Transaction.fromUnsignedTransaction(unsigned);
  inputs=new BTChipDongle.BTChipInput[unsignedtx.inputs.length];
  signatures=new Vector<byte[]>(unsignedtx.inputs.length);
  rawOutputsWriter.putCompactInt(unsigned.getOutputs().length);
  commonPath="String_Node_Str" + getNetwork().getBip44CoinType().getLastIndex() + "String_Node_Str"+ forAccount.getAccountIndex()+ "String_Node_Str";
  for (  TransactionOutput o : unsigned.getOutputs()) {
    Address toAddress;
    o.toByteWriter(rawOutputsWriter);
    toAddress=o.script.getAddress(getNetwork());
    Optional<Integer[]> addressId=forAccount.getAddressId(toAddress);
    if (!(addressId.isPresent() && addressId.get()[0] == 1)) {
      totalSending+=o.value;
      outputAddress=toAddress.toString();
    }
 else {
      changePath=commonPath + addressId.get()[0] + "String_Node_Str"+ addressId.get()[1];
    }
  }
  rawOutputs=rawOutputsWriter.toBytes();
  amount=CoinUtil.valueString(totalSending,false);
  fees=CoinUtil.valueString(unsigned.calculateFee(),false);
  for (int i=0; i < unsignedtx.inputs.length; i++) {
    TransactionInput currentInput=unsignedtx.inputs[i];
    Transaction currentTransaction=TransactionEx.toTransaction(forAccount.getTransaction(currentInput.outPoint.hash));
    ByteArrayInputStream bis=new ByteArrayInputStream(currentTransaction.toBytes());
    inputs[i]=dongle.getTrustedInput(new BitcoinTransaction(bis),currentInput.outPoint.index);
  }
  for (int i=0; i < unsignedtx.inputs.length; i++) {
    TransactionInput currentInput=unsignedtx.inputs[i];
    try {
      dongle.startUntrustedTransction(i == 0,i,inputs,currentInput.script.getScriptBytes());
    }
 catch (    BTChipException e) {
      if (e.getSW() == SW_PIN_NEEDED) {
        if (isTEE) {
          try {
            dongle.verifyPin(DUMMY_PIN.getBytes());
          }
 catch (          BTChipException e1) {
            if ((e1.getSW() & 0xfff0) == SW_INVALID_PIN) {
              postErrorMessage("String_Node_Str" + (e1.getSW() - SW_INVALID_PIN) + "String_Node_Str");
              return null;
            }
          }
 finally {
            LedgerTransportTEEProxy proxy=(LedgerTransportTEEProxy)getTransport().getTransport();
            try {
              byte[] updatedNvm=proxy.requestNVM().get();
              proxy.writeNVM(NVM_IMAGE,updatedNvm);
              proxy.setNVM(updatedNvm);
            }
 catch (            Exception ignore) {
            }
          }
          dongle.startUntrustedTransction(i == 0,i,inputs,currentInput.script.getScriptBytes());
        }
 else {
          mainThreadHandler.post(new Runnable(){
            @Override public void run(){
              eventBus.post(new OnPinRequest());
            }
          }
);
          String pin;
          try {
            pin=pinRequestEntry.take();
          }
 catch (          InterruptedException e1) {
            pin="String_Node_Str";
          }
          try {
            Log.d(LOG_TAG,"String_Node_Str");
            initialize();
            Log.d(LOG_TAG,"String_Node_Str");
            dongle.verifyPin(pin.getBytes());
            dongle.startUntrustedTransction(i == 0,i,inputs,currentInput.script.getScriptBytes());
          }
 catch (          BTChipException e1) {
            Log.d(LOG_TAG,"String_Node_Str",e1);
            postErrorMessage("String_Node_Str");
            return null;
          }
        }
      }
    }
    mainThreadHandler.post(new Runnable(){
      @Override public void run(){
        eventBus.post(new OnShowTransactionVerification());
      }
    }
);
    outputData=dongle.finalizeInput(rawOutputs,outputAddress,amount,fees,changePath);
    final BTChipDongle.BTChipOutput output=outputData;
    if ((i == 0) && outputData.isConfirmationNeeded()) {
      mainThreadHandler.post(new Runnable(){
        @Override public void run(){
          eventBus.post(new On2FaRequest(output));
        }
      }
);
      try {
        txpin=tx2FaEntry.take();
      }
 catch (      InterruptedException e1) {
        txpin="String_Node_Str";
      }
      Log.d(LOG_TAG,"String_Node_Str");
      initialize();
      Log.d(LOG_TAG,"String_Node_Str");
      dongle.startUntrustedTransction(false,i,inputs,currentInput.script.getScriptBytes());
      dongle.finalizeInput(rawOutputs,outputAddress,amount,fees,changePath);
    }
    StandardTransactionBuilder.SigningRequest signingRequest=signatureInfo[i];
    Address toSignWith=signingRequest.publicKey.toAddress(getNetwork());
    Optional<Integer[]> addressId=forAccount.getAddressId(toSignWith);
    String keyPath=commonPath + addressId.get()[0] + "String_Node_Str"+ addressId.get()[1];
    byte[] signature=dongle.untrustedHashSign(keyPath,txpin);
    signatures.add(SignatureUtils.canonicalize(signature,true,0x01));
  }
  if ((unsignedtx.outputs.length == 2) && (outputData.getValue() != null) && (outputData.getValue().length != 0)) {
    TransactionOutput firstOutput=unsignedtx.outputs[0];
    ByteReader byteReader=new ByteReader(outputData.getValue(),1);
    TransactionOutput dongleOutput=TransactionOutput.fromByteReader(byteReader);
    if ((firstOutput.value != dongleOutput.value) || (!Arrays.equals(firstOutput.script.getScriptBytes(),dongleOutput.script.getScriptBytes()))) {
      unsignedtx.outputs[0]=unsignedtx.outputs[1];
      unsignedtx.outputs[1]=firstOutput;
    }
  }
  return StandardTransactionBuilder.finalizeTransaction(unsigned,signatures);
}

Fixed version (ground truth):
private Transaction signInternal(UnsignedTransaction unsigned,Bip44AccountExternalSignature forAccount) throws BTChipException, TransactionOutputParsingException {
  Transaction unsignedtx;
  BTChipDongle.BTChipInput inputs[];
  Vector<byte[]> signatures;
  String outputAddress=null, amount, fees, commonPath, changePath="String_Node_Str";
  long totalSending=0;
  StandardTransactionBuilder.SigningRequest[] signatureInfo;
  String txpin="String_Node_Str";
  BTChipDongle.BTChipOutput outputData=null;
  ByteWriter rawOutputsWriter=new ByteWriter(1024);
  byte[] rawOutputs;
  if (!initialize()) {
    postErrorMessage("String_Node_Str");
    return null;
  }
  boolean isTEE=isTee();
  setState(Status.readyToScan,currentAccountState);
  if (isTEE) {
    try {
      int attempts=dongle.getVerifyPinRemainingAttempts();
      if (attempts == 0) {
        postErrorMessage("String_Node_Str");
        return null;
      }
    }
 catch (    BTChipException e) {
      if (e.getSW() == SW_CONDITIONS_NOT_SATISFIED) {
        postErrorMessage("String_Node_Str");
        return null;
      }
      if (e.getSW() == SW_HALTED) {
        LedgerTransportTEEProxy proxy=(LedgerTransportTEEProxy)getTransport().getTransport();
        try {
          proxy.close();
          proxy.init();
          int attempts=dongle.getVerifyPinRemainingAttempts();
          if (attempts == 0) {
            postErrorMessage("String_Node_Str");
            return null;
          }
        }
 catch (        BTChipException e1) {
          if (e1.getSW() == SW_CONDITIONS_NOT_SATISFIED) {
            postErrorMessage("String_Node_Str");
            return null;
          }
        }
catch (        Exception ignore) {
        }
      }
    }
  }
  signatureInfo=unsigned.getSignatureInfo();
  unsignedtx=Transaction.fromUnsignedTransaction(unsigned);
  inputs=new BTChipDongle.BTChipInput[unsignedtx.inputs.length];
  signatures=new Vector<byte[]>(unsignedtx.inputs.length);
  rawOutputsWriter.putCompactInt(unsigned.getOutputs().length);
  commonPath="String_Node_Str" + getNetwork().getBip44CoinType().getLastIndex() + "String_Node_Str"+ forAccount.getAccountIndex()+ "String_Node_Str";
  for (  TransactionOutput o : unsigned.getOutputs()) {
    Address toAddress;
    o.toByteWriter(rawOutputsWriter);
    toAddress=o.script.getAddress(getNetwork());
    Optional<Integer[]> addressId=forAccount.getAddressId(toAddress);
    if (!(addressId.isPresent() && addressId.get()[0] == 1)) {
      totalSending+=o.value;
      outputAddress=toAddress.toString();
    }
 else {
      changePath=commonPath + addressId.get()[0] + "String_Node_Str"+ addressId.get()[1];
    }
  }
  rawOutputs=rawOutputsWriter.toBytes();
  amount=CoinUtil.valueString(totalSending,false);
  fees=CoinUtil.valueString(unsigned.calculateFee(),false);
  for (int i=0; i < unsignedtx.inputs.length; i++) {
    TransactionInput currentInput=unsignedtx.inputs[i];
    Transaction currentTransaction=TransactionEx.toTransaction(forAccount.getTransaction(currentInput.outPoint.txid));
    ByteArrayInputStream bis=new ByteArrayInputStream(currentTransaction.toBytes());
    inputs[i]=dongle.getTrustedInput(new BitcoinTransaction(bis),currentInput.outPoint.index);
  }
  for (int i=0; i < unsignedtx.inputs.length; i++) {
    TransactionInput currentInput=unsignedtx.inputs[i];
    try {
      dongle.startUntrustedTransction(i == 0,i,inputs,currentInput.script.getScriptBytes());
    }
 catch (    BTChipException e) {
      if (e.getSW() == SW_PIN_NEEDED) {
        if (isTEE) {
          try {
            dongle.verifyPin(DUMMY_PIN.getBytes());
          }
 catch (          BTChipException e1) {
            if ((e1.getSW() & 0xfff0) == SW_INVALID_PIN) {
              postErrorMessage("String_Node_Str" + (e1.getSW() - SW_INVALID_PIN) + "String_Node_Str");
              return null;
            }
          }
 finally {
            LedgerTransportTEEProxy proxy=(LedgerTransportTEEProxy)getTransport().getTransport();
            try {
              byte[] updatedNvm=proxy.requestNVM().get();
              proxy.writeNVM(NVM_IMAGE,updatedNvm);
              proxy.setNVM(updatedNvm);
            }
 catch (            Exception ignore) {
            }
          }
          dongle.startUntrustedTransction(i == 0,i,inputs,currentInput.script.getScriptBytes());
        }
 else {
          mainThreadHandler.post(new Runnable(){
            @Override public void run(){
              eventBus.post(new OnPinRequest());
            }
          }
);
          String pin;
          try {
            pin=pinRequestEntry.take();
          }
 catch (          InterruptedException e1) {
            pin="String_Node_Str";
          }
          try {
            Log.d(LOG_TAG,"String_Node_Str");
            initialize();
            Log.d(LOG_TAG,"String_Node_Str");
            dongle.verifyPin(pin.getBytes());
            dongle.startUntrustedTransction(i == 0,i,inputs,currentInput.script.getScriptBytes());
          }
 catch (          BTChipException e1) {
            Log.d(LOG_TAG,"String_Node_Str",e1);
            postErrorMessage("String_Node_Str");
            return null;
          }
        }
      }
    }
    mainThreadHandler.post(new Runnable(){
      @Override public void run(){
        eventBus.post(new OnShowTransactionVerification());
      }
    }
);
    outputData=dongle.finalizeInput(rawOutputs,outputAddress,amount,fees,changePath);
    final BTChipDongle.BTChipOutput output=outputData;
    if ((i == 0) && outputData.isConfirmationNeeded()) {
      mainThreadHandler.post(new Runnable(){
        @Override public void run(){
          eventBus.post(new On2FaRequest(output));
        }
      }
);
      try {
        txpin=tx2FaEntry.take();
      }
 catch (      InterruptedException e1) {
        txpin="String_Node_Str";
      }
      Log.d(LOG_TAG,"String_Node_Str");
      initialize();
      Log.d(LOG_TAG,"String_Node_Str");
      dongle.startUntrustedTransction(false,i,inputs,currentInput.script.getScriptBytes());
      dongle.finalizeInput(rawOutputs,outputAddress,amount,fees,changePath);
    }
    StandardTransactionBuilder.SigningRequest signingRequest=signatureInfo[i];
    Address toSignWith=signingRequest.publicKey.toAddress(getNetwork());
    Optional<Integer[]> addressId=forAccount.getAddressId(toSignWith);
    String keyPath=commonPath + addressId.get()[0] + "String_Node_Str"+ addressId.get()[1];
    byte[] signature=dongle.untrustedHashSign(keyPath,txpin);
    signatures.add(SignatureUtils.canonicalize(signature,true,0x01));
  }
  if ((unsignedtx.outputs.length == 2) && (outputData.getValue() != null) && (outputData.getValue().length != 0)) {
    TransactionOutput firstOutput=unsignedtx.outputs[0];
    ByteReader byteReader=new ByteReader(outputData.getValue(),1);
    TransactionOutput dongleOutput=TransactionOutput.fromByteReader(byteReader);
    if ((firstOutput.value != dongleOutput.value) || (!Arrays.equals(firstOutput.script.getScriptBytes(),dongleOutput.script.getScriptBytes()))) {
      unsignedtx.outputs[0]=unsignedtx.outputs[1];
      unsignedtx.outputs[1]=firstOutput;
    }
  }
  return StandardTransactionBuilder.finalizeTransaction(unsigned,signatures);
}