# CVE-2023-25525: Information disclosure in Cumulus Linux

> An attacker can cause incorrect forwarding of VxLAN-encapsulated IPv6 packets, leading to information disclosure on NVIDIA Cumulus Linux network devices.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Sep 2023
- **Updated:** 24 Sep 2024
- **Also known as:** GHSA-g4pv-fp7j-xm38

## What is CVE-2023-25525?

CVE-2023-25525 is a high-severity vulnerability in NVIDIA Cumulus Linux, published on 20 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

NVIDIA Cumulus Linux contains a vulnerability in forwarding where a VxLAN-encapsulated IPv6 packet received on an SVI interface with DMAC/DIPv6 set to the link-local address of the SVI interface may be incorrectly forwarded. A successful exploit may lead to information disclosure.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2023-25525?

It affects 1 product.


Products: Nvidia Cumulus Linux.

## How do I fix CVE-2023-25525?

No fix has been published for CVE-2023-25525 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-25525 being exploited?

There is no known exploitation of CVE-2023-25525 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-2025-33181](https://insights.sbomify.com/CVE-2025-33181/): Command injection in Cumulus Linux GA (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-25525 and fix it if it is affected.

What it is: CVE-2023-25525 is a high-severity vulnerability in NVIDIA Cumulus Linux, published on 20 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-25525 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-2023-25525/ (Markdown: https://insights.sbomify.com/CVE-2023-25525/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-25525
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-25525
- OSV: https://osv.dev/vulnerability/CVE-2023-25525

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-25525/
Summaries are generated and may contain mistakes; the official description above is the record.