linux-cve-announce - CVE-2023-53603: scsi: qla2xxx: Avoid fcport pointer dereference

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Message-ID: <2025100431-CVE-2023-53603-df40@gregkh>
Date: Sat,  4 Oct 2025 17:51:57 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53603: scsi: qla2xxx: Avoid fcport pointer dereference

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

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

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

scsi: qla2xxx: Avoid fcport pointer dereference

Klocwork reported warning of NULL pointer may be dereferenced.  The routine
exits when sa_ctl is NULL and fcport is allocated after the exit call thus
causing NULL fcport pointer to dereference at the time of exit.

To avoid fcport pointer dereference, exit the routine when sa_ctl is NULL.

The Linux kernel CVE team has assigned CVE-2023-53603 to this issue.


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

	Fixed in 5.15.121 with commit 4406fe8a96a946c7ea5724ee59625755a1d9c59d
	Fixed in 6.1.40 with commit 477bc74ad1add644b606bff6ba1284943c42818a
	Fixed in 6.4.5 with commit 7bbeff613ec0560fb2f6f8b405288f3f043adf64
	Fixed in 6.5 with commit 6b504d06976fe4a61cc05dedc68b84fadb397f77

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-2023-53603
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/scsi/qla2xxx/qla_edif.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/4406fe8a96a946c7ea5724ee59625755a1d9c59d
	https://git.kernel.org/stable/c/477bc74ad1add644b606bff6ba1284943c42818a
	https://git.kernel.org/stable/c/7bbeff613ec0560fb2f6f8b405288f3f043adf64
	https://git.kernel.org/stable/c/6b504d06976fe4a61cc05dedc68b84fadb397f77