PT-2026-30034 · Linux · Linux Kernel

Published 2026-04-03 · Updated 2026-04-20 · CVE-2026-23420

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.

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

CVE-2026-23420

ECHO-AFA8-A5C7-21E7

Affected Products

Linux Kernel

References · 22

• https://git.kernel.org/stable/c/4ae8faf31b24c78653f4433298ee52813a56967a · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23420 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-23420 · Vendor Advisory
• https://git.kernel.org/stable/c/7ab511003c5ae3bf5364d7699a2e3ab1db513680 · Patch
• https://cve.org/CVERecord?id=CVE-2026-23420 · Security Note
• https://git.kernel.org/stable/c/aca4c9e4901b01b8b985993dc7df80bd1d1338bd · Patch
• https://git.kernel.org/stable/c/fcef983ad88832f3aa83491a174c345de57afbbd · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23420 · Vendor Advisory
• https://git.kernel.org/stable/c/fc404390a386404cf9822d4091ccae1f61efcbcd · Patch
• https://ubuntu.com/security/CVE-2026-23420 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23420 · Vendor Advisory
• https://git.kernel.org/stable/c/5feeea59ed142e15c3284d0b1a364c6786bf3487 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-23420 · Vendor Advisory
• https://git.kernel.org/stable/c/72c6df8f284b3a49812ce2ac136727ace70acc7c · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23420 · Vendor Advisory