5.5

CVE-2026-23420: wifi: wlcore: Fix a locking bug

Analyzed
AliasesUBUNTU-CVE-2026-23420DEBIAN-CVE-2026-23420
Published 03-04-2026Last modified 11-05-2026

Vulnerability summary

CVE-2026-23420 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.10%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 29 · Related 29
SUSE-SU-2026:21834-1SUSE-SU-2026:2238-1USN-8567-1USN-8574-1USN-8574-2USN-8574-3

Timeline

  1. 03-04-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.10%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.09% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < 4ae8faf31b24c78653f4433298ee52813a56967a | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < fc404390a386404cf9822d4091ccae1f61efcbcd | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < 7ab511003c5ae3bf5364d7699a2e3ab1db513680 | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < aca4c9e4901b01b8b985993dc7df80bd1d1338bd | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < 5feeea59ed142e15c3284d0b1a364c6786bf3487 | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < fcef983ad88832f3aa83491a174c345de57afbbd | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < 1a1c28a08d74716f3f8e3a21c86b30d0ff13521a | ≥ 45aa7f071b06c8481afed4c7b93e07c9584741e8, < 72c6df8f284b3a49812ce2ac136727ace70acc7c | 4.19
  • linux_kernelEOL≥ 4.19.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.77 | ≥ 6.13, < 6.18.17 | ≥ 6.19, < 6.19.7 | 4.19 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.8-1

3 vendors · 156 products

References

39 links
Show all 39 references