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GHSA-q8qj-fc9q-cphr

Undefined behavior in Tensorflow

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-15191

Packages

EcosystemPackageAffectedFixed in
PyPI tensorflow >= 2.2.0, < 2.2.1 2.2.1
PyPI tensorflow >= 2.3.0, < 2.3.1 2.3.1
PyPI tensorflow-cpu >= 2.2.0, < 2.2.1 2.2.1
PyPI tensorflow-cpu >= 2.3.0, < 2.3.1 2.3.1
PyPI tensorflow-gpu >= 2.2.0, < 2.2.1 2.2.1
PyPI tensorflow-gpu >= 2.3.0, < 2.3.1 2.3.1

Details

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

### Impact If a user passes an invalid argument to `dlpack.to_dlpack` the expected validations will cause variables to bind to `nullptr` while setting a `status` variable to the error condition. However, this `status` argument is not properly checked: https://github.com/tensorflow/tensorflow/blob/0e68f4d3295eb0281a517c3662f6698992b7b2cf/tensorflow/c/eager/dlpack.cc#L265-L267 Hence, code following these methods will bind references to null pointers: https://github.com/tensorflow/tensorflow/blob/0e68f4d3295eb0281a517c3662f6698992b7b2cf/tensorflow/c/eager/dlpack.cc#L279-L285 This is undefined behavior and reported as an error if compiling with `-fsanitize=null`. ### Patches We have patched the issue in 22e07fb204386768e5bcbea563641ea11f96ceb8 and will release a patch release for all affected versions. We recommend users to upgrade to TensorFlow 2.2.1 or 2.3.1. ### 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 discovered during variant analysis of [GHSA-rjjg-hgv6-h69v](https://github.com/tensorflow/tensorflow/security/advisories/GHSA-rjjg-hgv6-h69v).

References

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