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CVE-2023-29942

16
FAUCET Score

CVE-2023-29942 is a segmentation fault vulnerability in llvm-project, specifically within the mlir::Type::isa<mlir::LLVM::LLVMVoidType component, affecting LLVM products. It carries a CVSS score of 5.5 (MEDIUM), indicating a local attack vector with low complexity, requiring user interaction, and leading to high availability impact. There is currently no evidence of active exploitation, no publicly available exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2023-01-12CPE matchmatch criteria
cpe:2.3:a:llvm:llvm:2023-01-12:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 16th percentile among its peer group of 5,765 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cbl2 rust 1.72.0-1 on CBL Mariner 2.0Fixed in: 1.72.0-1
microsoftpatch availablevia msrc
Product: cbl2 clang16 16.0.0-2 on CBL Mariner 2.0Fixed in: 16.0.0-2

Vendor Advisories (2)

microsoft2023-May/CVE-2023-29942Moderate

llvm-project commit a0138390 was discovered to contain a segmentation fault via the component mlir::Type::isa<mlir::LLVM::LLVMVoidType.

May 9, 2023
redhatCVE-2023-29942Moderate

llvm: convert-spirv-to-llvm Pass trigger Segmentation fault in LLVMStructType verifier

May 5, 2023

References

github.com / llvm/llvm-project/issues/59990
Issue TrackingPatch