linux-cve-announce - CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading

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Message-ID: <2025100454-CVE-2023-53574-f72d@gregkh>
Date: Sat,  4 Oct 2025 17:17:28 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading

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

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

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

wifi: rtw88: delete timer and free skb queue when unloading

Fix possible crash and memory leak on driver unload by deleting
TX purge timer and freeing C2H queue in 'rtw_core_deinit()',
shrink critical section in the latter by freeing COEX queue
out of TX report lock scope.

The Linux kernel CVE team has assigned CVE-2023-53574 to this issue.


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

	Fixed in 6.5.5 with commit 4128b00a6006870e117ab1841e58f369e9284ecb
	Fixed in 6.6 with commit 634fcbcaa4062db39aeb5ac6ed1bc1feb8dd5216

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-2023-53574
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/realtek/rtw88/main.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/4128b00a6006870e117ab1841e58f369e9284ecb
	https://git.kernel.org/stable/c/634fcbcaa4062db39aeb5ac6ed1bc1feb8dd5216