linux-cve-announce - CVE-2023-53180: wifi: ath12k: Avoid NULL pointer access during management transmit cleanup

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Message-ID: <2025091556-CVE-2023-53180-5e16@gregkh>
Date: Mon, 15 Sep 2025 16:02:34 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53180: wifi: ath12k: Avoid NULL pointer access during management transmit cleanup

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

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

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

wifi: ath12k: Avoid NULL pointer access during management transmit cleanup

Currently 'ar' reference is not added in skb_cb.
Though this is generally not used during transmit completion
callbacks, on interface removal the remaining idr cleanup callback
uses the ar pointer from skb_cb from management txmgmt_idr. Hence fill them
during transmit call for proper usage to avoid NULL pointer dereference.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

The Linux kernel CVE team has assigned CVE-2023-53180 to this issue.


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

	Fixed in 6.4.7 with commit 7382d02160ef93c806fe1c1d4ef1fec445266747
	Fixed in 6.5 with commit 054b5580a36e435692c203c19abdcb9f7734320e

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-2023-53180
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/ath/ath12k/mac.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/7382d02160ef93c806fe1c1d4ef1fec445266747
	https://git.kernel.org/stable/c/054b5580a36e435692c203c19abdcb9f7734320e