linux-cve-announce - CVE-2026-23185: wifi: iwlwifi: mld: cancel mlo_scan_start

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Message-ID: <2026021431-CVE-2026-23185-7d56@gregkh>
Date: Sat, 14 Feb 2026 17:28:42 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2026-23185: wifi: iwlwifi: mld: cancel mlo_scan_start_wk

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

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

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

wifi: iwlwifi: mld: cancel mlo_scan_start_wk

mlo_scan_start_wk is not canceled on disconnection. In fact, it is not
canceled anywhere except in the restart cleanup, where we don't really
have to.

This can cause an init-after-queue issue: if, for example, the work was
queued and then drv_change_interface got executed.

This can also cause use-after-free: if the work is executed after the
vif is freed.

The Linux kernel CVE team has assigned CVE-2026-23185 to this issue.


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

	Issue introduced in 6.17 with commit 9748ad82a9d92b036ff3115207e36e2b9932e354 and fixed in 6.18.10 with commit 9b9f52f052f4953fecd2190ae2dde3aa76d10962
	Issue introduced in 6.17 with commit 9748ad82a9d92b036ff3115207e36e2b9932e354 and fixed in 6.19 with commit 5ff641011ab7fb63ea101251087745d9826e8ef5

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-2026-23185
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:
	drivers/net/wireless/intel/iwlwifi/mld/iface.c
	drivers/net/wireless/intel/iwlwifi/mld/mac80211.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/9b9f52f052f4953fecd2190ae2dde3aa76d10962
	https://git.kernel.org/stable/c/5ff641011ab7fb63ea101251087745d9826e8ef5