# CVE-2026-99047: gve: fix XSK buffer leak when rings are stopped


- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 23 Oct 2026
- **Updated:** 23 Oct 2026
- **Also known as:** BELL-CVE-2026-99047, DEBIAN-CVE-2026-99047, GHSA-mr8q-3jq6-m2c3, UBUNTU-CVE-2026-99047

## What is CVE-2026-99047?

CVE-2026-99047 is a vulnerability in Linux, published on 23 Oct 2026. 

### Official description

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

gve: fix XSK buffer leak when rings are stopped

GVE does not free XSK buffers when resetting ring state as a part of
stopping queues. This causes all XSK buffers which are posted to the
NIC to be leaked.

Free XSK buffers attached to an allocated buf_state when stopping rings.

This issue was hit in production.

## Which versions are affected by CVE-2026-99047?


## How do I fix CVE-2026-99047?

Upgrade to a fixed version.

## Is CVE-2026-99047 being exploited?

There is no known exploitation of CVE-2026-99047 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-99047 and fix it if it is affected.

What it is: CVE-2026-99047 is a vulnerability in Linux, published on 23 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-99047 in the wild and no public exploit code.

Affected product: 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-2026-99047/ (Markdown: https://insights.sbomify.com/CVE-2026-99047/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-99047
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-99047
- OSV: https://osv.dev/vulnerability/CVE-2026-99047

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-99047/
Summaries are generated and may contain mistakes; the official description above is the record.