linux-cve-announce - CVE-2023-53417: USB: sl811: fix memory leak with using debugfs

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Message-ID: <2025091803-CVE-2023-53417-caf7@gregkh>
Date: Thu, 18 Sep 2025 15:59:14 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53417: USB: sl811: 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: sl811: 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-2023-53417 to this issue.


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

	Fixed in 5.15.100 with commit bb4d5eefb67095d7c3b70b08498b23b7f2895f76
	Fixed in 6.1.18 with commit 54166af8941d0cf46b65cfa2fbce76e38d82fadf
	Fixed in 6.2.5 with commit 04fdfec7b0286972cb5457ef958c92585447a39f
	Fixed in 6.3 with commit e1523c4dbc54e164638ff8729d511cf91e27be04

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-2023-53417
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/host/sl811-hcd.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/bb4d5eefb67095d7c3b70b08498b23b7f2895f76
	https://git.kernel.org/stable/c/54166af8941d0cf46b65cfa2fbce76e38d82fadf
	https://git.kernel.org/stable/c/04fdfec7b0286972cb5457ef958c92585447a39f
	https://git.kernel.org/stable/c/e1523c4dbc54e164638ff8729d511cf91e27be04