PT-2026-30034 · Linux · Linux Kernel

CVE-2026-23420 · Published 2026-04-03 · Updated 2026-07-21

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A locking bug exists in the wlcore component of the Linux kernel. The issue involves ensuring that the wl->mutex is locked before it is unlocked. This was identified by the Clang thread-safety analyzer.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

CVE-2026-23420

ECHO-AFA8-A5C7-21E7

OPENSUSE-SU-2026:20826-1

SUSE-SU-2026:21834-1

SUSE-SU-2026:21841-1

SUSE-SU-2026:21845-1

SUSE-SU-2026:21860-1

SUSE-SU-2026:21876-1

SUSE-SU-2026:21877-1

SUSE-SU-2026:21916-1

SUSE-SU-2026:21919-1

SUSE-SU-2026:2217-1

SUSE-SU-2026:2238-1

USN-8567-1

USN-8574-1

USN-8575-1

USN-8576-1

Affected Products

Linux Kernel

References · 1748

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23420.json · Exploit
• https://ubuntu.com/security/CVE-2026-53063 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53082 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46110 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23365 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31747 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-52998 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43016 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43168 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23318 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8574-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-52957 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23454 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43262 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46270 · Vendor Advisory