CVE-2023-53603

MEDIUM EPSS 3.2%
Published Oct 4, 20258mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 4, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.15.61  –  <5.15.121
linuxlinux_kernel*≥5.18.18  –  <5.19
linuxlinux_kernel*≥5.19.2  –  <6.1.40
linuxlinux_kernel*≥6.2  –  <6.4.5

References 4

  • git.kernel.org https://git.kernel.org/stable/c/4406fe8a96a946c7ea5724ee59625755a1d9c59d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/477bc74ad1add644b606bff6ba1284943c42818a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b504d06976fe4a61cc05dedc68b84fadb397f77
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7bbeff613ec0560fb2f6f8b405288f3f043adf64
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4406fe8a96a946c7ea5724ee59625755a1d9c59d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/477bc74ad1add644b606bff6ba1284943c42818a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b504d06976fe4a61cc05dedc68b84fadb397f77
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7bbeff613ec0560fb2f6f8b405288f3f043adf64
    Patch