linux-cve-announce - CVE-2023-53406: USB: gadget: pxa25x_udc: fix memory leak with using debugfs

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Message-ID: <2025091801-CVE-2023-53406-d3e0@gregkh>
Date: Thu, 18 Sep 2025 15:59:03 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53406: USB: gadget: pxa25x_udc: 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:

USB: gadget: pxa25x_udc: 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-2023-53406 to this issue.


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

	Fixed in 5.15.100 with commit 6236a6d2cdfb710bd8a82c4b179d0a034d0d99cb
	Fixed in 6.1.18 with commit 78d9586d8e728be1e360d3d0da7170c791d1d55e
	Fixed in 6.2.5 with commit 8d48a7887dbca22e064c20caf20ae7949019fe9b
	Fixed in 6.3 with commit 7a038a681b7df78362d9fc7013e5395a694a9d3a

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-2023-53406
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/usb/gadget/udc/pxa25x_udc.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/6236a6d2cdfb710bd8a82c4b179d0a034d0d99cb
	https://git.kernel.org/stable/c/78d9586d8e728be1e360d3d0da7170c791d1d55e
	https://git.kernel.org/stable/c/8d48a7887dbca22e064c20caf20ae7949019fe9b
	https://git.kernel.org/stable/c/7a038a681b7df78362d9fc7013e5395a694a9d3a