CVE Database›Document archive›CVE-2026-46271

CVE-2026-46271

kernel: wifi: ath12k: do WoW offloads only on primary link

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · June 3, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's ath12k Wi-Fi driver. When a multi-link connection is active, the firmware incorrectly enables Wake-on-Wireless (WoW) offloads on both primary and secondary links. This misconfiguration can lead to a firmware crash on WCN7850 devices, resulting in a Denial of Service (DoS) for affected systems.

Statement

This vulnerability is rated as Low severity because exploitation requires specific Qualcomm Wi-Fi hardware configured in a multi-link setup and results only in an adapter-level denial of service. Red Hat Enterprise Linux server environments rarely deploy ath12k wireless hardware, substantially limiting real-world exposure across standard installations. The defect is confined to triggering an adapter firmware crash during Wake-on-Wireless offloading, with no impact on host data confidentiality or system integrity.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

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

CWE-440 · Expected Behavior Violation