CVE-2026-98335Public exploit

Kernel crash via uncleared mesh channel switch

Published Oct 6, 2026 · Updated Oct 6, 2026

Denial of service in Linux mac80211 mesh networking allows local users with mesh-control privileges to crash the kernel during channel-switch teardown. The ieee80211_stop_mesh function releases the channel context without clearing an active channel switch, so later CSA finalization rebuilds a beacon through invalid state and faults. The crash requires a mesh interface to leave while a channel switch remains active; no unauthenticated network trigger is established.

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

Denial of service in Linux mac80211 mesh networking allows local users with mesh-control privileges to crash the kernel during channel-switch teardown. The ieee80211_stop_mesh function releases the channel context without clearing an active channel switch, so later CSA finalization rebuilds a beacon through invalid state and faults. The crash requires a mesh interface to leave while a channel switch remains active; no unauthenticated network trigger is established.

The record

CVE
CVE-2026-98335
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.13
  2. Affected versionversion=b8456a14e9d2770846fcf74de18ff95b676149a3 <2e1d6e80148495e728a85a9250176f266312e55c
  3. Affected versionversion=b8456a14e9d2770846fcf74de18ff95b676149a3 <ac7472a24bd433b81c06582835dd1d5547c10da9
  4. Affected versionversion=b8456a14e9d2770846fcf74de18ff95b676149a3 <bc544ef02327edf61c94d2b6bae9d14b217009b2
  5. Affected versionversion=b8456a14e9d2770846fcf74de18ff95b676149a3 <d222fdc973bb8dbf0357772bd9042ffdc8291939

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.13; version=b8456a14e9d2770846fcf74de18ff95b676149a3 <2e1d6e80148495e728a85a9250176f266312e55c; version=b8456a14e9d2770846fcf74de18ff95b676149a3 <ac7472a24bd433b81c06582835dd1d5547c10da9; version=b8456a14e9d2770846fcf74de18ff95b676149a3 <bc544ef02327edf61c94d2b6bae9d14b217009b2; version=b8456a14e9d2770846fcf74de18ff95b676149a3 <d222fdc973bb8dbf0357772bd9042ffdc8291939

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 exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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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