---
id: CVE-2023-53603
title: 'scsi: qla2xxx: Avoid fcport pointer dereference'
summary: |-
  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 all…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7b2fbfa4b2cd3a24c1760b85d842e928070d4744 <
    4406fe8a96a946c7ea5724ee59625755a1d9c59d
  - >-
    Linux >= e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <
    477bc74ad1add644b606bff6ba1284943c42818a
  - >-
    Linux >= e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <
    7bbeff613ec0560fb2f6f8b405288f3f043adf64
  - >-
    Linux >= e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <
    6b504d06976fe4a61cc05dedc68b84fadb397f77
  - Linux 47b583ad1f7e459689eb1bdd222279a6986ccd69
  - Linux d2deafaef0330a863b5e046c1154b605588d19f7
  - Linux >= 5.15.61 < 5.15.121
  - Linux >= 5.18.18 < 5.19
  - Linux >= 5.19.2 < 5.20
  - Linux 6.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T20:25:10.871680Z'
published: '2025-10-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T20:31:16.878Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53603'
references:
  - url: 'https://git.kernel.org/stable/c/4406fe8a96a946c7ea5724ee59625755a1d9c59d'
  - url: 'https://git.kernel.org/stable/c/477bc74ad1add644b606bff6ba1284943c42818a'
  - url: 'https://git.kernel.org/stable/c/7bbeff613ec0560fb2f6f8b405288f3f043adf64'
  - url: 'https://git.kernel.org/stable/c/6b504d06976fe4a61cc05dedc68b84fadb397f77'
tags:
  - cve.org
epss: 0.00148
epssPercentile: 0.0403
ingestedAt: '2026-11-05T22:38:31.816Z'
---

## Overview

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.

## Affected

- `Linux >= 7b2fbfa4b2cd3a24c1760b85d842e928070d4744 < 4406fe8a96a946c7ea5724ee59625755a1d9c59d`
- `Linux >= e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 < 477bc74ad1add644b606bff6ba1284943c42818a`
- `Linux >= e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 < 7bbeff613ec0560fb2f6f8b405288f3f043adf64`
- `Linux >= e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 < 6b504d06976fe4a61cc05dedc68b84fadb397f77`
- `Linux 47b583ad1f7e459689eb1bdd222279a6986ccd69`
- `Linux d2deafaef0330a863b5e046c1154b605588d19f7`
- `Linux >= 5.15.61 < 5.15.121`
- `Linux >= 5.18.18 < 5.19`
- `Linux >= 5.19.2 < 5.20`
- `Linux 6.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.