CVE-2022-23573: Tensorflow is an Open Source Machine Learning Framework. The implementation of `AssignOp` can result in copying uninitia

TensorFlow's `AssignOp` (a copy operation in machine learning code) has a bug where it can copy uninitialized data (memory with random or leftover values) to a new tensor, causing unpredictable behavior. The code only checks that the destination is ready, but not the source, leaving room for uninitialized data to be used.