# CVE-2024-36952: scsi: lpfc: Move NPIV's transport unregistration to after resource clean up

> A race condition in the lpfc SCSI driver causes NPIV ports to remain registered on the fabric switch after deletion, requiring a kernel patch.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 May 2024
- **Updated:** 11 May 2026
- **Also known as:** BELL-CVE-2024-36952, DEBIAN-CVE-2024-36952, ROOT-OS-DEBIAN-11-CVE-2024-36952, UBUNTU-CVE-2024-36952

## What is CVE-2024-36952?

CVE-2024-36952 is a medium-severity vulnerability in Linux kernel, published on 30 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Move NPIV's transport unregistration to after resource clean up

There are cases after NPIV deletion where the fabric switch still believes
the NPIV is logged into the fabric.  This occurs when a vport is
unregistered before the Remove All DA_ID CT and LOGO ELS are sent to the
fabric.

Currently fc_remove_host(), which calls dev_loss_tmo for all D_IDs including
the fabric D_ID, removes the last ndlp reference and frees the ndlp rport
object.  This sometimes causes the race condition where the final DA_ID and
LOGO are skipped from being sent to the fabric switch.

Fix by moving the fc_remove_host() and scsi_remove_host() calls after DA_ID
and LOGO are sent.

Weakness: CWE-459 (Incomplete Cleanup)

## Which versions are affected by CVE-2024-36952?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-36952?

Apply the vendor's patch.

## Is CVE-2024-36952 being exploited?

There is no known exploitation of CVE-2024-36952 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-36952 and fix it if it is affected.

What it is: CVE-2024-36952 is a medium-severity vulnerability in Linux kernel, published on 30 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-36952 in the wild and no public exploit code.

Affected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-36952/ (Markdown: https://insights.sbomify.com/CVE-2024-36952/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-36952
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-36952
- OSV: https://osv.dev/vulnerability/CVE-2024-36952

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-36952/
Summaries are generated and may contain mistakes; the official description above is the record.