GHSA-VWHQ-49R4-GJ9V Reference binding to `nullptr` in `tf.ragged.cross`

Impact The shape inference code for tf.ragged.cross has an undefined behavior due to binding a reference to nullptr. In the following scenario, this results in a crash: python import tensorflow as tf @tf.function def test: y = tf.ragged.crosstf.ragged.constant'1','2' return y test Patches We have...