CVE-2023-53603

scsi: qla2xxx: Avoid fcport pointer dereference

MEDIUM
5.5
CVSS Score
Published: October 4, 2025 at 03:44 PM UTC
Updated: June 17, 2026 at 06:45 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 5.18.18v ≥ 5.19.25.15.61 ≤ v < 5.15.1215.18.18 ≤ v < 5.195.19.2 ≤ v < 5.205.19.2 ≤ v < 6.1.406.0 ≤ v < 6.1.406.0 ≤ v < 6.4.56.0 ≤ v < 6.56.2 ≤ v < 6.4.547b583ad1f7e459689eb1bdd222279a6986ccd695.15.615.18.185.19.26.07b2fbfa4b2cd3a24c1760b85d842e928070d4744d2deafaef0330a863b5e046c1154b605588d19f7e0fb8ce2bb9e52c846e54ad2c58b5b7beb13eb09
Vendor states this is fixed in 4406fe8a96a946c7ea5724ee59625755a1d9c59d (fixed)
Vendor states this is fixed in 477bc74ad1add644b606bff6ba1284943c42818a (fixed)
Vendor states this is fixed in 6b504d06976fe4a61cc05dedc68b84fadb397f77 (fixed)
Vendor states this is fixed in 7bbeff613ec0560fb2f6f8b405288f3f043adf64 (fixed)
Vendor states this is fixed in 5.15.121 (unaffected)
Affected range stops below 5.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.20, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.0 (unaffected)
Vendor states this is fixed in 6.1.40 (unaffected)
Vendor states this is fixed in 6.4.5 (unaffected)
Vendor states this is fixed in 6.5 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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