CVE-2021-29559: TensorFlow is an end-to-end open source platform for machine learning. An attacker can access data outside of bounds of

TensorFlow, an open-source machine learning platform, has a vulnerability in the `tf.raw_ops.UnicodeEncode` function that allows attackers to read data outside the bounds of a heap allocated array (memory that a program has requested to store data). The problem occurs because the code assumes the input data describes a valid sparse tensor (a matrix with mostly empty values) without properly validating it first.