linux-cve-announce - CVE-2023-53230: smb: client: fix warning in cifs_smb3_do

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Message-ID: <2025091514-CVE-2023-53230-6c94@gregkh>
Date: Mon, 15 Sep 2025 16:22:04 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53230: smb: client: fix warning in cifs_smb3_do_mount()

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

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

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

smb: client: fix warning in cifs_smb3_do_mount()

This fixes the following warning reported by kernel test robot

  fs/smb/client/cifsfs.c:982 cifs_smb3_do_mount() warn: possible
  memory leak of 'cifs_sb'

The Linux kernel CVE team has assigned CVE-2023-53230 to this issue.


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

	Fixed in 5.15.128 with commit 9850867042674361f455ea8901375cff5b800be5
	Fixed in 6.1.47 with commit 945f4a7aff84fde1f825d17a5050880345da3228
	Fixed in 6.4.12 with commit eb79f8dfba343667f9a82a252743f4e8f67ce420
	Fixed in 6.5 with commit 12c30f33cc6769bf411088a2872843c4f9ea32f9

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-2023-53230
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/smb/client/cifsfs.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/9850867042674361f455ea8901375cff5b800be5
	https://git.kernel.org/stable/c/945f4a7aff84fde1f825d17a5050880345da3228
	https://git.kernel.org/stable/c/eb79f8dfba343667f9a82a252743f4e8f67ce420
	https://git.kernel.org/stable/c/12c30f33cc6769bf411088a2872843c4f9ea32f9