linux-cve-announce - CVE-2023-53631: platform/x86: dell-sysman: Fix reference leak

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Message-ID: <2025100713-CVE-2023-53631-0542@gregkh>
Date: Tue,  7 Oct 2025 17:19:36 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53631: platform/x86: dell-sysman: Fix reference leak

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

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

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

platform/x86: dell-sysman: Fix reference leak

If a duplicate attribute is found using kset_find_obj(),
a reference to that attribute is returned. This means
that we need to dispose it accordingly. Use kobject_put()
to dispose the duplicate attribute in such a case.

Compile-tested only.

The Linux kernel CVE team has assigned CVE-2023-53631 to this issue.


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

	Issue introduced in 5.11 with commit e8a60aa7404bfef37705da5607c97737073ac38d and fixed in 5.15.132 with commit d079a3e1ccdd183b75db4f5289be347980b45284
	Issue introduced in 5.11 with commit e8a60aa7404bfef37705da5607c97737073ac38d and fixed in 6.1.53 with commit 6ced15ff1746006476f1407fe722911a45a7874d
	Issue introduced in 5.11 with commit e8a60aa7404bfef37705da5607c97737073ac38d and fixed in 6.4.16 with commit c5402011992bcc2b5614fe7fef24f9cdaec7473b
	Issue introduced in 5.11 with commit e8a60aa7404bfef37705da5607c97737073ac38d and fixed in 6.5.3 with commit 9d9e03bec147407826266580e7d6ec427241d859
	Issue introduced in 5.11 with commit e8a60aa7404bfef37705da5607c97737073ac38d and fixed in 6.6 with commit 7295a996fdab7bf83dc3d4078fa8b139b8e0a1bf

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-2023-53631
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/platform/x86/dell/dell-wmi-sysman/sysman.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/d079a3e1ccdd183b75db4f5289be347980b45284
	https://git.kernel.org/stable/c/6ced15ff1746006476f1407fe722911a45a7874d
	https://git.kernel.org/stable/c/c5402011992bcc2b5614fe7fef24f9cdaec7473b
	https://git.kernel.org/stable/c/9d9e03bec147407826266580e7d6ec427241d859
	https://git.kernel.org/stable/c/7295a996fdab7bf83dc3d4078fa8b139b8e0a1bf