linux-cve-announce - CVE-2023-54016: wifi: ath12k: Fix memory leak in rx_desc and tx

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Message-ID: <2025122432-CVE-2023-54016-522e@gregkh>
Date: Wed, 24 Dec 2025 11:57:00 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-54016: wifi: ath12k: Fix memory leak in rx_desc and tx_desc

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

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

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

wifi: ath12k: Fix memory leak in rx_desc and tx_desc

Currently when ath12k_dp_cc_desc_init() is called we allocate
memory to rx_descs and tx_descs. In ath12k_dp_cc_cleanup(), during
descriptor cleanup rx_descs and tx_descs memory is not freed.

This is cause of memory leak. These allocated memory should be
freed in ath12k_dp_cc_cleanup.

In ath12k_dp_cc_desc_init(), we can save base address of rx_descs
and tx_descs. In ath12k_dp_cc_cleanup(), we can free rx_descs and
tx_descs memory using their base address.

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

The Linux kernel CVE team has assigned CVE-2023-54016 to this issue.


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

	Fixed in 6.5.5 with commit e16be2d34883eecfe7fd888fcdb76c7a5db5d187
	Fixed in 6.6 with commit afb522b36e76acaa9f8fc06d0a9742d841c47c16

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-2023-54016
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/dp.c
	drivers/net/wireless/ath/ath12k/dp.h


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/e16be2d34883eecfe7fd888fcdb76c7a5db5d187
	https://git.kernel.org/stable/c/afb522b36e76acaa9f8fc06d0a9742d841c47c16