linux-cve-announce - CVE-2023-53202: PM: domains: fix memory leak with using debugfs

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Message-ID: <2025091509-CVE-2023-53202-5e01@gregkh>
Date: Mon, 15 Sep 2025 16:21:36 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53202: PM: domains: fix memory leak with using debugfs_lookup()

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

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

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

PM: domains: fix memory leak with using debugfs_lookup()

When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

The Linux kernel CVE team has assigned CVE-2023-53202 to this issue.


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

	Fixed in 5.15.99 with commit dddc132eb0dca3969f9146ef8feac0aa542aa305
	Fixed in 6.1.16 with commit cde67cb7d2d1757baa83271c1f0892727e79f52e
	Fixed in 6.2.3 with commit 543d7113c37206ed7dae7bfb0b7e50955077770e
	Fixed in 6.3 with commit 0b6200e1e9f53dabdc30d0f6c51af9a5f664d32b

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-2023-53202
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/base/power/domain.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/dddc132eb0dca3969f9146ef8feac0aa542aa305
	https://git.kernel.org/stable/c/cde67cb7d2d1757baa83271c1f0892727e79f52e
	https://git.kernel.org/stable/c/543d7113c37206ed7dae7bfb0b7e50955077770e
	https://git.kernel.org/stable/c/0b6200e1e9f53dabdc30d0f6c51af9a5f664d32b