CVE-2026-23420

MEDIUMNVD 5.55.5—

5.5

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.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 2.7%
KEV: Not listed

Published

April 3, 2026

Last Modified

April 24, 2026

References (8)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a1c28a08d74716f3f8e3a21c86b30d0ff13521a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ae8faf31b24c78653f4433298ee52813a56967a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5feeea59ed142e15c3284d0b1a364c6786bf3487
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72c6df8f284b3a49812ce2ac136727ace70acc7c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ab511003c5ae3bf5364d7699a2e3ab1db513680
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aca4c9e4901b01b8b985993dc7df80bd1d1338bd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc404390a386404cf9822d4091ccae1f61efcbcd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcef983ad88832f3aa83491a174c345de57afbbd

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-667

Data Freshness Timeline

(refreshed 18× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-22 21:16 UTCepss_batch
2026-05-21 22:43 UTCepss_batch

Frequently asked(5)

What is CVE-2026-23420?

CVE-2026-23420 is a medium vulnerability published on April 3, 2026. 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.

When was CVE-2026-23420 disclosed?

CVE-2026-23420 was first published in the National Vulnerability Database on April 3, 2026, with the most recent update on April 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-23420 actively exploited?

CVE-2026-23420 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-23420?

CVE-2026-23420 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-23420?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23420, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-23420

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-23420?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)