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Fixed

LIN1021-7685 : Security Advisory - linux - CVE-2021-47091

Created: Mar 4, 2024 Updated: Oct 14, 2025

Resolved Date: Oct 13, 2025

Found In Version: 10.21.20.1

Fix Version: 10.21.20.21

Severity: Standard

Applicable for: Wind River Linux LTS 21

Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:

mac80211: fix locking in ieee80211_start_ap error path

We need to hold the local->mtx to release the channel context,
as even encoded by the lockdep_assert_held() there. Fix it.

CVEs

CVE-2021-47091