CVE-2025-2953Public exploit

Process crash via unchecked zero stride

Published Mar 30, 2025 · Updated Apr 22, 2025

Denial of service in PyTorch 2.6.0+cu124 allows local users to crash a Python process through torch.mkldnn_max_pool2d. The MKLDNN max-pooling path accepts a zero stride and passes it to native pooling code, which terminates the process with SIGFPE instead of rejecting the argument. The caller must already be able to run Python code in the target process, and PyTorch classifies invalid-argument crashes as ordinary bugs rather than security vulnerabilities.

CVSS severity4.8
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in PyTorch 2.6.0+cu124 allows local users to crash a Python process through torch.mkldnn_max_pool2d. The MKLDNN max-pooling path accepts a zero stride and passes it to native pooling code, which terminates the process with SIGFPE instead of rejecting the argument. The caller must already be able to run Python code in the target process, and PyTorch classifies invalid-argument crashes as ordinary bugs rather than security vulnerabilities.

The record

CVE
CVE-2025-2953
Published
Mar 30, 2025
Updated
Apr 22, 2025
Vendor
PyTorch
Product
PyTorch
Classifications
CWE-404
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=2.6.0+cu124

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

PyTorch · PyTorchversion=2.6.0+cu124

Published CVSS scores

4.8VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P

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.

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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-404Improper Resource Shutdown or Release

Public exploit references

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

Technologies

Your stack

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Your stack

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