CVE-2023-26924

LLVM a0dab4950 has a segmentation fault in mlir::outlineSingleBlockRegion.

5.5 MediumDisputed

LLVM a0dab4950 has a segmentation fault in mlir::outlineSingleBlockRegion. NOTE: third parties dispute this because the LLVM security policy excludes "Language front-ends ... for which a malicious input file can cause undesirable behavior."

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.33%Up 0.3 points since Mar 28, 2023

What each source reports

NVD Score used 5.5

Record: CVE-2023-26924
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

CVE List No score

Record: CVE-2023-26924
Updated: 2026-11-02

EUVDEUVD-2023-30715 No score

Record: EUVD-2023-30715
Updated: 2026-11-02

GitHub AdvisoriesGHSA-472h-pprq-pg3p 5.5

LLVM a0dab4950 has a segmentation fault in mlir::outlineSingleBlockRegion.

LLVM a0dab4950 has a segmentation fault in mlir::outlineSingleBlockRegion.

Record: GHSA-472h-pprq-pg3p
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSVBELL-CVE-2023-26924 5.5

CVE-2023-26924 does not affect BellSoft software

Record: BELL-CVE-2023-26924
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-26924 5.5

Record: DEBIAN-CVE-2023-26924
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV No score

Record: CVE-2023-26924
Updated: 2026-11-02

Affected products

llvm

Affected packages

Affected packages
Package	Affected	Fixed
`llvm-toolchain-14` Debian:12	All versions, plus listed versions 1:14.0.6-121:14.0.6-12+powerpc1:14.0.6-131:14.0.6-141:14.0.6-16 Show 6 moreShow less 1:14.0.6-16.11:14.0.6-16.1~exp11:14.0.6-171:14.0.6-181:14.0.6-191:14.0.6-20	None known
`llvm-toolchain-15` Debian:12	All versions, plus listed versions 1:15.0.6-41:15.0.6-5~exp11:15.0.6-5~exp21:15.0.6-5~exp31:15.0.7-1 Show 19 moreShow less 1:15.0.7-1+hurd.11:15.0.7-101:15.0.7-10.1~exp11:15.0.7-111:15.0.7-11.11:15.0.7-121:15.0.7-131:15.0.7-141:15.0.7-151:15.0.7-15+hurd.11:15.0.7-21:15.0.7-31:15.0.7-41:15.0.7-51:15.0.7-5~exp11:15.0.7-61:15.0.7-71:15.0.7-81:15.0.7-9	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-26924 is a medium vulnerability (CVSS 5.5) in Llvm, published March 27, 2023. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile.