linux-cve-announce - CVE-2023-53279: misc: vmw_balloon: fix memory leak with using debugfs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2025091624-CVE-2023-53279-f671@gregkh>
Date: Tue, 16 Sep 2025 10:11:29 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53279: misc: vmw_balloon: 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:

misc: vmw_balloon: 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-2023-53279 to this issue.


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

	Fixed in 5.15.100 with commit b94b39bf3d545671f210a2257d18e33c8b874699
	Fixed in 6.1.18 with commit d1c545e44c1ec08bef0c0c14e632eec516431e9c
	Fixed in 6.2.5 with commit f7651fa88b17c2d7af949981a2423179db5e9453
	Fixed in 6.3 with commit 209cdbd07cfaa4b7385bad4eeb47e5ec1887d33d

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-2023-53279
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/misc/vmw_balloon.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/b94b39bf3d545671f210a2257d18e33c8b874699
	https://git.kernel.org/stable/c/d1c545e44c1ec08bef0c0c14e632eec516431e9c
	https://git.kernel.org/stable/c/f7651fa88b17c2d7af949981a2423179db5e9453
	https://git.kernel.org/stable/c/209cdbd07cfaa4b7385bad4eeb47e5ec1887d33d