linux-cve-announce - CVE-2023-53004: ovl: fix tmpfile leak

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Message-ID: <2025032713-CVE-2023-53004-e58b@gregkh>
Date: Thu, 27 Mar 2025 17:43:51 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-53004: ovl: fix tmpfile leak

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

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

ovl: fix tmpfile leak

Missed an error cleanup.

The Linux kernel CVE team has assigned CVE-2023-53004 to this issue.


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

	Issue introduced in 6.1 with commit 2b1a77461f1602f870d6fe61fc65610bb8c8dd05 and fixed in 6.1.9 with commit caa0ea92503f8afa1941f6ac899e5c4e3f6ec8bb
	Issue introduced in 6.1 with commit 2b1a77461f1602f870d6fe61fc65610bb8c8dd05 and fixed in 6.2 with commit baabaa505563362b71f2637aedd7b807d270656c

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-2023-53004
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:
	fs/overlayfs/copy_up.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/caa0ea92503f8afa1941f6ac899e5c4e3f6ec8bb
	https://git.kernel.org/stable/c/baabaa505563362b71f2637aedd7b807d270656c