First published: Fri Feb 04 2022(Updated: )
### Impact The [implementation of `AssignOp`](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/kernels/assign_op.h#L30-L143) can result in copying unitialized data to a new tensor. This later results in undefined behavior. The implementation has a check that the left hand side of the assignment is initialized (to minimize number of allocations), but does not check that the right hand side is also initialized. ### Patches We have patched the issue in GitHub commit [ef1d027be116f25e25bb94a60da491c2cf55bd0b](https://github.com/tensorflow/tensorflow/commit/ef1d027be116f25e25bb94a60da491c2cf55bd0b). 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.
Credit: security-advisories@github.com security-advisories@github.com
Affected Software | Affected Version | How to fix |
---|---|---|
pip/tensorflow-gpu | =2.7.0 | 2.7.1 |
pip/tensorflow-gpu | >=2.6.0<2.6.3 | 2.6.3 |
pip/tensorflow-gpu | <2.5.3 | 2.5.3 |
pip/tensorflow-cpu | =2.7.0 | 2.7.1 |
pip/tensorflow-cpu | >=2.6.0<2.6.3 | 2.6.3 |
pip/tensorflow-cpu | <2.5.3 | 2.5.3 |
pip/tensorflow | =2.7.0 | 2.7.1 |
pip/tensorflow | >=2.6.0<2.6.3 | 2.6.3 |
pip/tensorflow | <2.5.3 | 2.5.3 |
TensorFlow Keras | <=2.5.2 | |
TensorFlow Keras | >=2.6.0<=2.6.2 | |
TensorFlow Keras | =2.7.0 |
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CVE-2022-23573 has a high severity rating due to the potential for undefined behavior caused by copying uninitialized data.
To fix CVE-2022-23573, upgrade to TensorFlow versions 2.5.3, 2.6.3, or 2.7.1 depending on the installed version.
CVE-2022-23573 affects certain versions of Google TensorFlow, including those up to 2.5.2 and versions between 2.6.0 and 2.6.2, as well as 2.7.0.
CVE-2022-23573 can lead to unstable software behavior due to undefined actions from uninitialized data being used.
There are no official workarounds for CVE-2022-23573; the only recommended solution is to upgrade to a patched version.