CVE-2026-46271

Firmware crash via duplicate multi-link WoW offloads

Published Jun 3, 2026 · Updated Jun 3, 2026

Denial of service in the Linux kernel ath12k driver allows local users to crash WCN7850 firmware during multi-link suspend. The ath12k_wow_op_suspend path enables Wake-on-Wireless offloads on both the primary and secondary links instead of limiting setup to the primary link. The gate is affected WCN7850 hardware with an MLO connection, configured WoW, and a suspend transition; the resulting firmware crash interrupts Wi-Fi and suspend or resume.

CVSS severity7.8
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel ath12k driver allows local users to crash WCN7850 firmware during multi-link suspend. The ath12k_wow_op_suspend path enables Wake-on-Wireless offloads on both the primary and secondary links instead of limiting setup to the primary link. The gate is affected WCN7850 hardware with an MLO connection, configured WoW, and a suspend transition; the resulting firmware crash interrupts Wi-Fi and suspend or resume.

The record

CVE
CVE-2026-46271
Published
Jun 3, 2026
Updated
Jun 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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=32f7b19668bd2894f1a236580c2132fc4b9f4449 <7379837c3f9efa576dc2d716ebfaa3a113b3112f
  2. Affected versionversion=32f7b19668bd2894f1a236580c2132fc4b9f4449 <e042da1085d9f1686c58a4378d5840f52a36598e
  3. Affected versionversion=32f7b19668bd2894f1a236580c2132fc4b9f4449 <e62102ac9b773bdb08475aa9ca24dea61ae98708
  4. Affected versionversion=6.16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=32f7b19668bd2894f1a236580c2132fc4b9f4449 <7379837c3f9efa576dc2d716ebfaa3a113b3112f; version=32f7b19668bd2894f1a236580c2132fc4b9f4449 <e042da1085d9f1686c58a4378d5840f52a36598e; version=32f7b19668bd2894f1a236580c2132fc4b9f4449 <e62102ac9b773bdb08475aa9ca24dea61ae98708; version=6.16

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

T1489Service Stop

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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