`CHECK` fail via inputs in `PyFunc`

Medium4.8CVE-2022-41908 · Published Nov 21, 2022 · updated Jul 13, 2026

### Impact An input `token` that is not a UTF-8 bytestring will trigger a `CHECK` fail in [`tf.raw_ops.PyFunc`](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/python/lib/core/py_func.cc). ```python import tensorflow as tf value = tf.constant(value=[1,2]) token = b'\xb0' dataType = [tf.int32] tf.raw_ops.PyFunc(input=value,token=token,Tout=dataType) ``` ### Patches We have patched the issue in GitHub commit [9f03a9d3bafe902c1e6beb105b2f24172f238645](https://github.com/tensorflow/tensorflow/commit/9f03a9d3bafe902c1e6beb105b2f24172f238645). The fix will be included in TensorFlow 2.11. We will also cherrypick this commit on TensorFlow 2.10.1, 2.9.3, and TensorFlow 2.8.4, as these are also affected and still in supported range. ### For more information Please 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. ### Attribution This vulnerability has been reported by pattarakritr@smu.edu.sg