linux-cve-announce - CVE-2023-53992: wifi: cfg80211: ocb: don't leave if not joined

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Message-ID: <2025122424-CVE-2023-53992-d45e@gregkh>
Date: Wed, 24 Dec 2025 11:56:36 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53992: wifi: cfg80211: ocb: don't leave if not joined

From: Greg Kroah-Hartman <gregkh@...nel.org>

Description
===========

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

wifi: cfg80211: ocb: don't leave if not joined

If there's no OCB state, don't ask the driver/mac80211 to
leave, since that's just confusing. Since set/clear the
chandef state, that's a simple check.

The Linux kernel CVE team has assigned CVE-2023-53992 to this issue.


Affected and fixed versions
===========================

	Fixed in 6.1.55 with commit d7b0fe3487d203c04ee1bda91a63bd4dd398c350
	Fixed in 6.5.5 with commit 94332210902967b7d63294b43428c8ed075b20e6
	Fixed in 6.6 with commit abc76cf552e13cfa88a204b362a86b0e08e95228

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2023-53992
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	net/wireless/ocb.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/d7b0fe3487d203c04ee1bda91a63bd4dd398c350
	https://git.kernel.org/stable/c/94332210902967b7d63294b43428c8ed075b20e6
	https://git.kernel.org/stable/c/abc76cf552e13cfa88a204b362a86b0e08e95228