Uninitialized variable access in Tensorflow
High7.6CVE-2022-23573 · Published Feb 9, 2022 · updated Jul 13, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| tensorflow PyPI | < 2.5.3 | 2.5.3 |
| >= 2.6.0, < 2.6.3 | 2.6.3 | |
| >= 2.7.0, < 2.7.1 | 2.7.1 |
Details and references
### 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.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-908
- Also known as
- BIT-tensorflow-2022-23573, CVE-2022-23573, PYSEC-2022-137, PYSEC-2022-82, PYSEC-2026-3229
- github.com/tensorflow/tensorflow/security/advisories/GHSA-q85f-69q7-55h2
- nvd.nist.gov/vuln/detail/CVE-2022-23573
- github.com/tensorflow/tensorflow/commit/ef1d027be116f25e25bb94a60da491c2cf55bd0b
- github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2022-82.yaml
- github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2022-137.yaml
- github.com/tensorflow/tensorflow
- github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/kernels/assign_op.h#L30-L143
More TensorFlow advisories
All TensorFlow| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Feb 92022 | Out of bounds read in Tensorflow CVE-2022-21726High8.1fixed in 2.5.3, 2.6.3, 2.7.1 | High8.1 | 2.5.3, 2.6.3, 2.7.1 |
| Feb 92022 | Integer overflow in Tensorflow CVE-2022-21727High7.6fixed in 2.5.3, 2.6.3, 2.7.1 | High7.6 | 2.5.3, 2.6.3, 2.7.1 |
| Feb 92022 | Out of bounds read in Tensorflow CVE-2022-21728High8.1fixed in 2.5.3, 2.6.3, 2.7.1 | High8.1 | 2.5.3, 2.6.3, 2.7.1 |
| Feb 92022 | Out of bounds read in Tensorflow CVE-2022-21730High8.1fixed in 2.5.3, 2.6.3, 2.7.1 | High8.1 | 2.5.3, 2.6.3, 2.7.1 |
| Feb 92022 | Out of bounds read and write in Tensorflow CVE-2022-23574High8.8fixed in 2.5.3, 2.6.3, 2.7.1 | High8.8 | 2.5.3, 2.6.3, 2.7.1 |
| Feb 92022 | Memory leak in decoding PNG images CVE-2022-23585Medium4.3fixed in 2.5.3, 2.6.3, 2.7.1 | Medium4.3 | 2.5.3, 2.6.3, 2.7.1 |