CVE-2022-29205: Segfault due to missing support for quantized types in TensorFlow
First published: Fri May 20 2022(Updated: )
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, there is a potential for segfault / denial of service in TensorFlow by calling `tf.compat.v1.*` ops which don't yet have support for quantized types, which was added after migration to TensorFlow 2.x. In these scenarios, since the kernel is missing, a `nullptr` value is passed to `ParseDimensionValue` for the `py_value` argument. Then, this is dereferenced, resulting in segfault. Versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4 contain a patch for this issue.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TensorFlow Keras | <2.6.4 | |
| TensorFlow Keras | >=2.7.0<2.7.2 | |
| TensorFlow Keras | =2.7.0-rc0 | |
| TensorFlow Keras | =2.7.0-rc1 | |
| TensorFlow Keras | =2.8.0 | |
| TensorFlow Keras | =2.8.0-rc0 | |
| TensorFlow Keras | =2.8.0-rc1 | |
| TensorFlow Keras | =2.9.0-rc0 | |
| TensorFlow Keras | =2.9.0-rc1 |
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Reference Links
- https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/python/eager/pywrap_tfe_src.cc#L296-L320
- https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/python/eager/pywrap_tfe_src.cc#L480-L482
- https://github.com/tensorflow/tensorflow/commit/237822b59fc504dda2c564787f5d3ad9c4aa62d9
- https://github.com/tensorflow/tensorflow/releases/tag/v2.6.4
- https://github.com/tensorflow/tensorflow/releases/tag/v2.7.2
- https://github.com/tensorflow/tensorflow/releases/tag/v2.8.1
- https://github.com/tensorflow/tensorflow/releases/tag/v2.9.0
- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-54ch-gjq5-4976
Frequently Asked Questions
What is the severity of CVE-2022-29205?
CVE-2022-29205 has a medium severity rating due to its potential for causing segmentation faults and denial of service.
How do I fix CVE-2022-29205?
To fix CVE-2022-29205, upgrade TensorFlow to versions 2.9.0 or later, or to 2.8.1, 2.7.2, or 2.6.4.
What versions of TensorFlow are affected by CVE-2022-29205?
CVE-2022-29205 affects TensorFlow versions prior to 2.9.0, 2.8.1, 2.7.2, and 2.6.4.
What causes CVE-2022-29205 in TensorFlow?
CVE-2022-29205 is caused by the calling of `tf.compat.v1.*` operations that do not support quantized types.
Is CVE-2022-29205 remote exploitable?
CVE-2022-29205 is not directly remote exploitable as it requires specifically crafted input to trigger a segmentation fault.
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- version/tensorflow keras/2.7.0-rc0
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- version/tensorflow keras/2.8.0
- version/tensorflow keras/2.8.0-rc0
- version/tensorflow keras/2.8.0-rc1
- version/tensorflow keras/2.9.0-rc0
- version/tensorflow keras/2.9.0-rc1