linux-cve-announce - CVE-2023-53430: wifi: mt76: dma: fix memory leak running mt76_dma_tx

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Message-ID: <2025091857-CVE-2023-53430-4aaa@gregkh>
Date: Thu, 18 Sep 2025 18:04:21 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53430: wifi: mt76: dma: fix memory leak running mt76_dma_tx_cleanup

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

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

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

wifi: mt76: dma: fix memory leak running mt76_dma_tx_cleanup

Fix device unregister memory leak and alway cleanup all configured
rx queues in mt76_dma_tx_cleanup routine.

The Linux kernel CVE team has assigned CVE-2023-53430 to this issue.


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

	Issue introduced in 6.2 with commit 52546e27787ed005413ac622ae9e4c3087100b50 and fixed in 6.2.3 with commit 604990fee0a6d608a6cca179ae474f2a1c6add8a
	Issue introduced in 6.2 with commit 52546e27787ed005413ac622ae9e4c3087100b50 and fixed in 6.3 with commit 3f7dda36e0b6dfa2cd26191f754ba061ab8191f2

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-2023-53430
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/mediatek/mt76/dma.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/604990fee0a6d608a6cca179ae474f2a1c6add8a
	https://git.kernel.org/stable/c/3f7dda36e0b6dfa2cd26191f754ba061ab8191f2