CVE-2024-26683

Wi-Fi connection denial via stale ECSA handling

Published Apr 2, 2024 · Updated May 11, 2026

Availability failure in Linux 6.7 cfg80211 allows attackers to block Wi-Fi connections via a persistent ECSA in probe responses. The connection check treats every extended channel switch announcement as an active switch and refuses association, even when an access point repeats stale data indefinitely. Triggering requires Wi-Fi discovery of an access point that continuously advertises the stale element; the documented failure prevents association rather than crashing the kernel.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Availability failure in Linux 6.7 cfg80211 allows attackers to block Wi-Fi connections via a persistent ECSA in probe responses. The connection check treats every extended channel switch announcement as an active switch and refuses association, even when an access point repeats stale data indefinitely. Triggering requires Wi-Fi discovery of an access point that continuously advertises the stale element; the documented failure prevents association rather than crashing the kernel.

The record

CVE
CVE-2024-26683
Published
Apr 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.7
  2. Affected versionversion=c09c4f31998bac6d73508e38812518aceb069b68 <177fbbcb4ed6b306c1626a277fac3fb1c495a4c7
  3. Affected versionversion=c09c4f31998bac6d73508e38812518aceb069b68 <ce112c941c2b172afba3e913a90c380647d53975

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=c09c4f31998bac6d73508e38812518aceb069b68 <177fbbcb4ed6b306c1626a277fac3fb1c495a4c7; version=c09c4f31998bac6d73508e38812518aceb069b68 <ce112c941c2b172afba3e913a90c380647d53975

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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