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GHSA-fx5c-h9f6-rv7c

`CHECK`-fails due to attempting to build a reference tensor

Source: GitHub Advisory Database (reviewed) Moderate CVE-2022-23588

Packages

EcosystemPackageAffectedFixed in
PyPI tensorflow < 2.5.3 2.5.3
PyPI tensorflow >= 2.6.0, < 2.6.3 2.6.3
PyPI tensorflow >= 2.7.0, < 2.7.1 2.7.1
PyPI tensorflow-cpu < 2.5.3 2.5.3
PyPI tensorflow-cpu >= 2.6.0, < 2.6.3 2.6.3
PyPI tensorflow-cpu >= 2.7.0, < 2.7.1 2.7.1
PyPI tensorflow-gpu < 2.5.3 2.5.3
PyPI tensorflow-gpu >= 2.6.0, < 2.6.3 2.6.3
PyPI tensorflow-gpu >= 2.7.0, < 2.7.1 2.7.1

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact A malicious user can cause a denial of service by altering a `SavedModel` such that [Grappler optimizer would attempt to build a tensor using a reference `dtype`](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/optimizers/constant_folding.cc#L1328-L1402). This would result in a crash due to a `CHECK`-fail [in the `Tensor` constructor](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/framework/tensor.cc#L733-L781) as reference types are not allowed. ### Patches We have patched the issue in GitHub commit [6b5adc0877de832b2a7c189532dbbbc64622eeb6](https://github.com/tensorflow/tensorflow/commit/6b5adc0877de832b2a7c189532dbbbc64622eeb6). The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, 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.

References

External links from the advisory. They lead to third-party sites.