CVE-2024-31583

Process memory corruption via unchecked operator index

Published Apr 17, 2024 · Updated Aug 2, 2024

Use-after-free in PyTorch before 2.2.0 allows local users to corrupt process memory by loading crafted mobile bytecode. InterpreterState::run uses an unvalidated instruction operand to index the mobile operator tables, allowing an out-of-range lookup to access freed heap memory. Exploitation requires a hosting application to load attacker-controlled mobile bytecode; a process crash is demonstrated, while stronger control is not publicly demonstrated.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in PyTorch before 2.2.0 allows local users to corrupt process memory by loading crafted mobile bytecode. InterpreterState::run uses an unvalidated instruction operand to index the mobile operator tables, allowing an out-of-range lookup to access freed heap memory. Exploitation requires a hosting application to load attacker-controlled mobile bytecode; a process crash is demonstrated, while stronger control is not publicly demonstrated.

The record

CVE
CVE-2024-31583
Published
Apr 17, 2024
Updated
Aug 2, 2024
Vendor
Lightning AI
Product
PyTorch Lightning
Classifications
CWE-416, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=2.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Lightning AI · PyTorch Lightningversion=2.2.0

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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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