CVE-2026-98334

Kernel crash via stale AP beacon state

Published Oct 6, 2026 · Updated Oct 6, 2026

A state-handling flaw in Linux mac80211 allows attackers to trigger a kernel divide-error crash through failed access-point setup and scanning. The ieee80211_start_ap() failure path leaves enable_beacon and beacon_int set, so scan completion attempts to restore beaconing with invalid access-point state. The trigger requires control over access-point setup and a subsequent scan on an affected wireless interface; remote Wi-Fi traffic alone is not shown to reach it.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A state-handling flaw in Linux mac80211 allows attackers to trigger a kernel divide-error crash through failed access-point setup and scanning. The ieee80211_start_ap() failure path leaves enable_beacon and beacon_int set, so scan completion attempts to restore beaconing with invalid access-point state. The trigger requires control over access-point setup and a subsequent scan on an affected wireless interface; remote Wi-Fi traffic alone is not shown to reach it.

The record

CVE
CVE-2026-98334
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 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=3.9
  2. Affected versionversion=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <3f28551d0241254a75626d868041c6340285088b
  3. Affected versionversion=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <5d5ff5b36f5748a2a077f875a73ccb26860d3fcc
  4. Affected versionversion=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <6eac225f59c1c2277ac74f8a716d6df0ba3b8d28
  5. Affected versionversion=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.9; version=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <3f28551d0241254a75626d868041c6340285088b; version=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <5d5ff5b36f5748a2a077f875a73ccb26860d3fcc; version=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <6eac225f59c1c2277ac74f8a716d6df0ba3b8d28; version=d6a83228823fc0cc8d79d95c9f0bf568b7317862 <d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

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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