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NVD / CVE Program· CNA Linux

CVE-2026-23040: wifi: mac80211_hwsim: fix typo in frequency notification

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 1251bbdb8f5b2ea86ca9b4268a2e6aa34372ab33, 333418872bfecf4843f1ded7a4151685dfcf07d5.

Low priority for now. Upgrade to Linux Linux 1251bbdb8f5b2ea86ca9b4268a2e6aa34372ab33, 333418872bfecf4843f1ded7a4151685dfcf07d5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: fix typo in frequency notification The NAN notification is for 5745 MHz which corresponds to channel 149 and not 5475 which is not actually a valid channel. This could result in a NULL pointer dereference in cfg80211_next_nan_dw_notif.

—No exploit Fix available
Published
Feb 4, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.18affected
    • a37a6f54439bf82b827a7072415d3a4afa4e12bd and later · before 1251bbdb8f5b2ea86ca9b4268a2e6aa34372ab33affected · git
    • a37a6f54439bf82b827a7072415d3a4afa4e12bd and later · before 333418872bfecf4843f1ded7a4151685dfcf07d5affected · git
    • before 6.18not affected · semver
    • 6.18.6 and later · up to and including 6.18.*not affected · semver
    • 6.19 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9kernelbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64kbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debugbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-develbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-cross-headersbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-debugbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-debug-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-debug-develbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8
AlmaLinux:9kernel-debug-modules-corebefore 5.14.0-687.5.1.el9_85.14.0-687.5.1.el9_8

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-23038Jan 31, 2026 · pnfs/flexfiles: Fix memory leak in nfs4_ff_alloc_deviceid_node()
    0Monitor
  • ← EarlierCVE-2025-71192Feb 4, 2026 · ALSA: ac97: fix a double free in snd_ac97_controller_register()
    28Monitor
  • Later →CVE-2026-23041Feb 4, 2026 · bnxt_en: Fix NULL pointer crash in bnxt_ptp_enable during error cleanup
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1251bbdb8f5b2ea86ca9b4268a2e6aa34372ab33Vendor (CNA)
Linux Linux333418872bfecf4843f1ded7a4151685dfcf07d5Vendor (CNA)
almalinux:kernel5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-687.5.1.el9_8 · AlmaLinux:9Package registry (OSV)
debian:linux6.18.8-1 · Debian:14Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-ppc64le0:5.14.0-687.5.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records