CVE-2026-23420General(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch linux linux_kernel systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

In the Linux kernel, the following vulnerability has been resolved: wifi: wlcore: Fix a locking bug Make sure that wl->mutex is locked before it is unlocked. This has been detected by the Clang thread-safety analyzer.

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0.5/ 10 priority

Sources & remediation

Patch / fix

Weakness type (CWE)

CWE-667

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

linux_kernel

Threat summary

Patch or workaround signal is available
4 mentions across 2 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 2 signals
Technical details provided in 3 signals
General: 2 classified signals
Peaked 1d ago at 3 mentions (2026-04-03); latest day: 1
4 total mentions across 2 days

Affected systems

Vendors

linux

Products

linux_kernel

2 versions affected across 1 product

Deep dive

Activity timeline4 mentions / 2d

Signal classification2 categories

General

250.0%

Patch

250.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-03	3	General1Patch2
2026-04-26	1	General1

Full discourse4 posts

WindowsForum@windowsforum167d
General
🪟 Medium CVE, big “availability” energy: a wlcore mutex that can be unlocked wrong. Local, but on a Wi‑Fi chip? Congrats, you just met the “can’t connect” bug. #WindowsForum https://windowsforum.com/threads/cve-2026-23420-wlcore-mutex-bug-medium-linux-cve-with-high-availability-impact.415190/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #LinuxKernel #CvePatching #WiFiDriver #ImproperLocking https://t.co/eXx4xvEZ3s
Post summary
The post highlights CVE-2026-23420 involving an improper unlocking of a wlcore mutex on Wi‑Fi chips, potentially leading to availability issues, but provides no information on PoC, exploit code, active exploitation, or patches.
0000033
1.1K followersView on X
Infoflowcloud@infoflowcloud189d
Patch
🚨*CVE* CVE-2026-23420 In the Linux kernel, the following vulnerability has been resolved: wifi: wlcore: Fix a locking bug Make sure that wl->mutex is locked before it is unlocked. This h… https://www.cve.org/CVERecord?id=CVE-2026-23420 ----- Traducción: CVE-2026-23420 En … http://infoflow.cloud`
Post summary
CVE‑2026‑23420, a Linux kernel locking bug in the wlcore driver, has been fixed as noted in the CVE record, with no reported PoC, exploit, or active exploitation.
0000043
65 followersView on X
CVE@CVEnew189d
Patch
CVE-2026-23420 In the Linux kernel, the following vulnerability has been resolved: wifi: wlcore: Fix a locking bug Make sure that wl->mutex is locked before it is unlocked. This h… https://www.cve.org/CVERecord?id=CVE-2026-23420
Post summary
The note announces that CVE-2026-23420, a locking bug in the Linux kernel wlcore driver, has been fixed. A patch has been released to ensure the mutex is correctly locked before being unlocked.
00000131
56.9K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds189d
General
CVE-2026-23420 In the Linux kernel, the following vulnerability has been resolved: wifi https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-23420
Post summary
The message indicates that CVE-2026-23420 has been resolved in the Linux kernel, but offers no further technical details, patches, or exploit information.
0000037
4.0K followersView on X

CPE platform detail9 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

9 of 9 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	linux	linux_kernel	-	-	-
OS	linux	linux_kernel	4.19	-	-
OS	linux	linux_kernel	7.0	-	-
OS	linux	linux_kernel	7.0	-	-
OS	linux	linux_kernel	7.0	-	-
OS	linux	linux_kernel	7.0	-	-
OS	linux	linux_kernel	7.0	-	-
OS	linux	linux_kernel	7.0	-	-
OS	linux	linux_kernel	7.0	-	-

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What researchers are saying

CVE-2026-23420

WindowsForum[verified]@windowsforumGeneral

The post highlights CVE-2026-23420 involving an improper unlocking of a wlcore mutex on Wi‑Fi chips, potentially leading to availability issues, but provides no information on PoC, exploit code, active exploitation, or patches.

Infoflowcloud@infoflowcloudPatch

CVE‑2026‑23420, a Linux kernel locking bug in the wlcore driver, has been fixed as noted in the CVE record, with no reported PoC, exploit, or active exploitation.

CVE@CVEnewPatch

The note announces that CVE-2026-23420, a locking bug in the Linux kernel wlcore driver, has been fixed. A patch has been released to ensure the mutex is correctly locked before being unlocked.

Vulmon Vulnerability Feed@VulmonFeedsGeneral

The message indicates that CVE-2026-23420 has been resolved in the Linux kernel, but offers no further technical details, patches, or exploit information.