# CVE-2023-25526: Denial of service in Cumulus Linux

> An attacker on an adjacent network can cause a denial of service in NVIDIA Cumulus Linux by injecting crafted packets that trigger uncaught exceptions.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Sep 2023
- **Updated:** 24 Sep 2024
- **Also known as:** GHSA-4v88-6pp2-rx52

## What is CVE-2023-25526?

CVE-2023-25526 is a medium-severity denial of service vulnerability in NVIDIA Cumulus Linux, published on 20 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

NVIDIA Cumulus Linux contains a vulnerability in neighmgrd and nlmanager where an attacker on an adjacent network may cause an uncaught exception by injecting a crafted packet. A successful exploit may lead to denial of service.

Weakness: CWE-248 (Uncaught Exception)

## Which versions are affected by CVE-2023-25526?

It affects 1 product.


Products: Nvidia Cumulus Linux.

## How do I fix CVE-2023-25526?

No fix has been published for CVE-2023-25526 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-25526 being exploited?

There is no known exploitation of CVE-2023-25526 in the wild and no public exploit code.

## Other vulnerabilities in NVIDIA Cumulus Linux

- [CVE-2025-33179](https://insights.sbomify.com/CVE-2025-33179/): Privilege escalation in Cumulus Linux GA (high 8.0)
- [CVE-2025-33180](https://insights.sbomify.com/CVE-2025-33180/): Command injection in Cumulus Linux GA (high 8.0)
- [CVE-2026-24183](https://insights.sbomify.com/CVE-2026-24183/): Privilege escalation in Cumulus Linux GA (high 7.8)
- [CVE-2026-24184](https://insights.sbomify.com/CVE-2026-24184/): Memory corruption in Cumulus Linux GA (high 7.5)
- [CVE-2023-25525](https://insights.sbomify.com/CVE-2023-25525/): Information disclosure in Cumulus Linux (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-25526 and fix it if it is affected.

What it is: CVE-2023-25526 is a medium-severity denial of service vulnerability in NVIDIA Cumulus Linux, published on 20 Sep 2023. 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-2023-25526 in the wild and no public exploit code.

Affected product: NVIDIA Cumulus Linux. 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-2023-25526/ (Markdown: https://insights.sbomify.com/CVE-2023-25526/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-25526
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-25526
- OSV: https://osv.dev/vulnerability/CVE-2023-25526

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-25526/
Summaries are generated and may contain mistakes; the official description above is the record.