TensorFlow is an open source platform for machine learning. Prior to versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4, the implementation of `tf.raw_ops.SparseTensorDenseAdd` does not fully validate the input arguments. In this case, a reference gets bound to a `nullptr` during kernel execution. This is undefined behavior. Versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4 contain a patch for this issue.
https://github.com/tensorflow/tensorflow/releases/tag/v2.9.0
https://github.com/tensorflow/tensorflow/releases/tag/v2.8.1
https://github.com/tensorflow/tensorflow/releases/tag/v2.7.2
https://github.com/tensorflow/tensorflow/releases/tag/v2.6.4
https://github.com/tensorflow/tensorflow/commit/11ced8467eccad9c7cb94867708be8fa5c66c730