CVE-2025-2998Public exploit

Process crash via empty batch metadata dereference

Published Mar 31, 2025 · Updated Mar 31, 2025

Null-pointer dereference in PyTorch 2.6.0 allows local users to crash a process through pad_packed_sequence with empty metadata. _pad_packed_sequence treats an empty batch_sizes tensor as valid, then dereferences batch_sizes[0] without checking that an element exists. The caller must run Python code locally and supply a crafted PackedSequence; the demonstrated consequence is a segmentation-fault process crash.

CVSS severity4.8
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Null-pointer dereference in PyTorch 2.6.0 allows local users to crash a process through pad_packed_sequence with empty metadata. _pad_packed_sequence treats an empty batch_sizes tensor as valid, then dereferences batch_sizes[0] without checking that an element exists. The caller must run Python code locally and supply a crafted PackedSequence; the demonstrated consequence is a segmentation-fault process crash.

The record

CVE
CVE-2025-2998
Published
Mar 31, 2025
Updated
Mar 31, 2025
Vendor
Linux Foundation
Product
PyTorch
Classifications
CWE-119
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Linux Foundation · PyTorchversion=2.6.0

Published CVSS scores

4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P
5.3VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo