TensorFlow has Null Pointer Error in LookupTableImportV2

Impact

The function tf.raw_ops.LookupTableImportV2 cannot handle scalars in the values parameter and gives an NPE.

```python

import tensorflow as tf

v = tf.Variable(1)

@tf.function(jit_compile=True)

def test():

func = tf.raw_ops.LookupTableImportV2

para={'table_handle': v.handle,'keys': [62.98910140991211, 94.36528015136719], 'values': -919}

y = func(**para)

return y

print(test())

`

Patches

We have patched the issue in GitHub commit [980b22536abcbbe1b4a5642fc940af33d8c19b69](https://github.com/tensorflow/tensorflow/commit/980b22536abcbbe1b4a5642fc940af33d8c19b69).

The fix will be included in TensorFlow 2.12. We will also cherrypick this commit on TensorFlow 2.11.1.

For more information

Please consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by r3pwnx of 360 AIVul Team