linux-cve-announce - CVE-2023-53223: drm/msm/dsi: Add missing check for alloc_ordered

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Message-ID: <2025091513-CVE-2023-53223-ee66@gregkh>
Date: Mon, 15 Sep 2025 16:21:57 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53223: drm/msm/dsi: Add missing check for alloc_ordered_workqueue

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

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

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

drm/msm/dsi: Add missing check for alloc_ordered_workqueue

Add check for the return value of alloc_ordered_workqueue as it may return
NULL pointer and cause NULL pointer dereference.

Patchwork: https://patchwork.freedesktop.org/patch/517646/

The Linux kernel CVE team has assigned CVE-2023-53223 to this issue.


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

	Fixed in 4.14.308 with commit 3e18f157faeeb59034404569e8e07cbe1c0030a7
	Fixed in 4.19.276 with commit 9257974858ee847b2e1fd552691b8ba5c2fc1c7b
	Fixed in 5.4.235 with commit 3a9a4a9725c60f04326b5019a52ce15aee808506
	Fixed in 5.10.173 with commit 540c66180afd59309a442d3bf1f2393464c8b4c5
	Fixed in 5.15.99 with commit 5dfe7a5386fde5a656ca06602b31bf50e26954cd
	Fixed in 6.1.16 with commit 25a6499b1a53d854eda2b161b5c8a20296515dbe
	Fixed in 6.2.3 with commit 759ea5677c362fb1e3edc667260ba9f409dc931d
	Fixed in 6.3 with commit 115906ca7b535afb1fe7b5406c566ccd3873f82b

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-2023-53223
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/gpu/drm/msm/dsi/dsi_host.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/3e18f157faeeb59034404569e8e07cbe1c0030a7
	https://git.kernel.org/stable/c/9257974858ee847b2e1fd552691b8ba5c2fc1c7b
	https://git.kernel.org/stable/c/3a9a4a9725c60f04326b5019a52ce15aee808506
	https://git.kernel.org/stable/c/540c66180afd59309a442d3bf1f2393464c8b4c5
	https://git.kernel.org/stable/c/5dfe7a5386fde5a656ca06602b31bf50e26954cd
	https://git.kernel.org/stable/c/25a6499b1a53d854eda2b161b5c8a20296515dbe
	https://git.kernel.org/stable/c/759ea5677c362fb1e3edc667260ba9f409dc931d
	https://git.kernel.org/stable/c/115906ca7b535afb1fe7b5406c566ccd3873f82b