CVE-2023-29942: llvm Out-of-bounds Read
Vulnerability summary
CVE-2023-29942 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in llvm. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.7% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 05-05-2023PublishedVulnerability first disclosed.
- 29-01-2025Last modifiedVulnerability information updated.
Description
llvm-project commit a0138390 was discovered to contain a segmentation fault via the component mlir::Type::isa<mlir::LLVM::LLVMVoidType.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian3 products
- llvm-toolchain-13All versions (No fix recorded)
- llvm-toolchain-14All versions (No fix recorded)
- llvm-toolchain-15All versions (No fix recorded)
Ubuntu3 products
- llvm-toolchain-13All versions (No fix recorded)
- llvm-toolchain-14All versions (No fix recorded)
- llvm-toolchain-15All versions (No fix recorded)
Llvm1 product
- llvm2023-01-12
3 vendors · 7 products
