CVE-2024-26682

Wi-Fi interruption via stale ECSA rejection

Published Apr 2, 2024 · Updated May 11, 2026

A connection-refusal flaw in Linux 6.7 allows local users to interrupt Wi-Fi access by connecting to an access point with a stale ECSA element. The mac80211 logic in net/mac80211/mlme.c treats persisted ECSA probe-response data as an active channel switch and rejects authentication instead of ignoring the stale announcement. Exposure requires an affected kernel using mac80211 and a nearby access point advertising the relevant channel-switch data; the bounded consequence is failure to connect.

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

A connection-refusal flaw in Linux 6.7 allows local users to interrupt Wi-Fi access by connecting to an access point with a stale ECSA element. The mac80211 logic in net/mac80211/mlme.c treats persisted ECSA probe-response data as an active channel switch and rejects authentication instead of ignoring the stale announcement. Exposure requires an affected kernel using mac80211 and a nearby access point advertising the relevant channel-switch data; the bounded consequence is failure to connect.

The record

CVE
CVE-2024-26682
Published
Apr 2, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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 <35e2385dbe787936c793d70755a5177d267a40aa
  3. Affected versionversion=c09c4f31998bac6d73508e38812518aceb069b68 <ea88bde8e3fefbe4268f6991375dd629895a090a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=c09c4f31998bac6d73508e38812518aceb069b68 <35e2385dbe787936c793d70755a5177d267a40aa; version=c09c4f31998bac6d73508e38812518aceb069b68 <ea88bde8e3fefbe4268f6991375dd629895a090a

Published CVSS scores

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

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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

T1499Endpoint Denial of Service

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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