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Vulnerabilities

Vulnerability · CVE-2023-53603

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.

Published Oct 4, 2025 · catalog updated May 23, 2026 · Linux Linux

Check if you run it

No confirmed exploitation is on record for CVE-2023-53603. EPSS is 0.14%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.14%
Remediation
Version ranges on file
Affected products
vendor Linux Linux e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <7bbeff613ec0560fb2f6f8b405288f3f043adf64

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <7bbeff613ec0560fb2f6f8b405288f3f043adf64e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <7bbeff613ec0560fb2f6f8b405288f3f043adf64

How to fix CVE-2023-53603

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-53603. EPSS is 0.14%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <7bbeff613ec0560fb2f6f8b405288f3f043adf64 e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09 <7bbeff613ec0560fb2f6f8b405288f3f043adf64. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.14%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 4, 2025 · EUVD

    Detected

    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 N

  2. May 23, 2026 · EUVD

    Updated

    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 N

Sources

  • CVE.orgVulnerability recordCVE-2023-53603

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-53603

    30-day exploitation probability 0.14%

    first.org
  • EUVDVulnerability recordEUVD-2025-32284

    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 f

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.