Description
A vulnerability was found in PyTorch 2.6.0. It has been rated as critical. Affected by this issue is the function torch.nn.utils.rnn.unpack_sequence. The manipulation leads to memory corruption. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | PyTorch | 2.6.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | pytorch | 2.12.0+dfsg2-1 | — |
| Debian 13 | pytorch | No fix yet | — |
| Debian 12 | pytorch | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | pytorch | No fix yet | — |
| Ubuntu 26.04 LTS | pytorch | No fix yet | — |
| Ubuntu 25.10 | pytorch | No fix yet | — |
| Ubuntu 22.04 LTS | pytorch | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | torch | < 2.9.1 | 2.9.1 | GHSA-vgrw-7cvw-pwgx |
| PyPI | torch | <= 2.6.0-NA | — | PYSEC-2025-193 |
Advisories 1
- WID-SEC-2025-0666 PyTorch: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Mar 31, 2025
References
- VDB-302048 | PyTorch torch.nn.utils.rnn.unpack_sequence memory corruption vdb-entry technical-description
- VDB-302048 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #524198 | pytorch pytorch (torch.nn.utils.rnn.unpack_sequence) torch 2.6.0 Segmentation fault third-party-advisory
- https://github.com/pytorch/pytorch/issues/149622 issue-tracking
- https://github.com/pytorch/pytorch/issues/149622#issue-2935495265 exploit issue-tracking