CVE-2023-29932Public exploit

Toolchain crash via malformed MLIR canonicalization

Published May 5, 2023 · Updated Jan 29, 2025

Memory-management flaw in LLVM MLIR allows context-dependent attackers to crash the toolchain via a crafted MLIR file. During canonicalization, DeduplicateAndRemoveDeadOperandsAndResults replaces operation uses, and IROperand::insertIntoCurrent faults while relinking the use-def chain. Exploitation requires a user to open the file with an affected MLIR tool, and the demonstrated consequence is a process crash without data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-management flaw in LLVM MLIR allows context-dependent attackers to crash the toolchain via a crafted MLIR file. During canonicalization, DeduplicateAndRemoveDeadOperandsAndResults replaces operation uses, and IROperand::insertIntoCurrent faults while relinking the use-def chain. Exploitation requires a user to open the file with an affected MLIR tool, and the demonstrated consequence is a process crash without data disclosure or modification.

The record

CVE
CVE-2023-29932
Published
May 5, 2023
Updated
Jan 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-119, CWE-120, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1204.002Malicious File

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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