# CVE-2024-35954: scsi: sg: Avoid sg device teardown race

> A race condition in the Linux kernel SCSI generic driver causes a null pointer dereference, leading to a kernel crash and denial of service.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 20 May 2024
- **Updated:** 5 Aug 2026
- **Also known as:** BELL-CVE-2024-35954, DEBIAN-CVE-2024-35954, GHSA-v35f-xcmj-3g2x, UBUNTU-CVE-2024-35954

## What is CVE-2024-35954?

CVE-2024-35954 is a high-severity vulnerability in Linux kernel, published on 20 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: sg: Avoid sg device teardown race

sg_remove_sfp_usercontext() must not use sg_device_destroy() after calling
scsi_device_put().

sg_device_destroy() is accessing the parent scsi_device request_queue which
will already be set to NULL when the preceding call to scsi_device_put()
removed the last reference to the parent scsi_device.

The resulting NULL pointer exception will then crash the kernel.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2024-35954?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2024-35954?

Apply the vendor's patch.

## Is CVE-2024-35954 being exploited?

There is no known exploitation of CVE-2024-35954 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-2024-35954 and fix it if it is affected.

What it is: CVE-2024-35954 is a high-severity vulnerability in Linux kernel, published on 20 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-2024-35954 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-2024-35954/ (Markdown: https://insights.sbomify.com/CVE-2024-35954/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-35954
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-35954
- OSV: https://osv.dev/vulnerability/CVE-2024-35954

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-35954/
Summaries are generated and may contain mistakes; the official description above is the record.