CVE Database›Document archive›CVE-2026-68408

CVE-2026-68408

kernel: wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 10, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's wifi: cfg80211 component. A local attacker could trigger a system deadlock by performing specific concurrent operations related to wireless interface management. This race condition occurs when a wireless interface is being torn down while a related network session is simultaneously closed, causing the system to become unresponsive. This can lead to a Denial of Service (DoS).

Statement

This vulnerability is rated as Low severity because exploitation requires local access on a host actively utilizing wireless networking, which significantly limits exposure in standard deployments. Most enterprise installations of Red Hat Enterprise Linux run on server hardware without physical Wi-Fi interfaces or active wireless subsystems. Even where wireless hardware is present, an attacker can only induce an unrecoverable system hang through a timing-dependent race condition, with no loss of 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-833 · Deadlock