1## TFSA-2022-088: `CHECK` failure in `TensorListReserve` via missing validation 2 3### CVE Number 4CVE-2022-35960 5 6### Impact 7In [`core/kernels/list_kernels.cc's TensorListReserve`](https://github.com/tensorflow/tensorflow/blob/c8ba76d48567aed347508e0552a257641931024d/tensorflow/core/kernels/list_kernels.cc#L322-L325), `num_elements` is assumed to be a tensor of size 1. When a `num_elements` of more than 1 element is provided, then `tf.raw_ops.TensorListReserve` fails the `CHECK_EQ` in `CheckIsAlignedAndSingleElement`. 8```python 9import tensorflow as tf 10 11tf.raw_ops.TensorListReserve(element_shape=(1,1), num_elements=tf.constant([1,1], dtype=tf.int32), element_dtype=tf.int8) 12``` 13 14### Patches 15We have patched the issue in GitHub commit [xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx](https://github.com/tensorflow/tensorflow/commit/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx). 16 17 18The fix will be included in TensorFlow 2.10.0. We will also cherrypick this commit on TensorFlow 2.9.1, TensorFlow 2.8.1, and TensorFlow 2.7.2, as these are also affected and still in supported range. 19 20 21### For more information 22Please 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. 23 24 25### Attribution 26This vulnerability has been reported by Kang Hong Jin from Singapore Management University. 27