linux-cve-announce - CVE-2023-54191: wifi: mt76: mt7996: fix memory leak in mt7996_mcu

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Message-ID: <2025123027-CVE-2023-54191-3204@gregkh>
Date: Tue, 30 Dec 2025 13:09:59 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-54191: wifi: mt76: mt7996: fix memory leak in mt7996_mcu_exit

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

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

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

wifi: mt76: mt7996: fix memory leak in mt7996_mcu_exit

Always purge mcu skb queues in mt7996_mcu_exit routine even if
mt7996_firmware_state fails.

The Linux kernel CVE team has assigned CVE-2023-54191 to this issue.


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

	Issue introduced in 6.2 with commit 98686cd21624c75a043e96812beadddf4f6f48e5 and fixed in 6.2.3 with commit b539d35e13e5d6b3dca76271261106b2356aa64c
	Issue introduced in 6.2 with commit 98686cd21624c75a043e96812beadddf4f6f48e5 and fixed in 6.3 with commit da5b4d93e141b52c5a71d0c41a042d1bcaf70d2e

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-2023-54191
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/mt7996/mcu.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/b539d35e13e5d6b3dca76271261106b2356aa64c
	https://git.kernel.org/stable/c/da5b4d93e141b52c5a71d0c41a042d1bcaf70d2e