# GSD-2022-1004945: comedi: vmk80xx: fix expression for tx buffer size

> A potential buffer size calculation error in the vmk80xx driver requires patching, though specific impact remains unproven.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Local or same network only
- **Victim action needed:** Not stated
- **Fix available:** No
- **Published:** 31 Jul 2022

## What is GSD-2022-1004945?

GSD-2022-1004945 is a vulnerability in Kernel, published on 31 Jul 2022. It can only be exploited from the same machine or local network.

### Official description

comedi: vmk80xx: fix expression for tx buffer size

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
This ID is fixed in Linux Kernel version v4.9.320 by commit e8cc56b8d7e2017fd96e7fd89812961e0bcb0dd3, it was introduced in version v4.9.290 by commit ec85bcff4ed09260243d8f39faba99e1041718ba. For more details please see the references link.

## Which versions are affected by GSD-2022-1004945?

1 open source package ship an affected version, including Kernel.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `Kernel` | Linux | All versions | None |

## How do I fix GSD-2022-1004945?

No fix has been published for GSD-2022-1004945 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1004945 being exploited?

There is no known exploitation of GSD-2022-1004945 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1004945 and fix it if it is affected.

What it is: GSD-2022-1004945 is a vulnerability in Kernel, published on 31 Jul 2022. It can only be exploited from the same machine or local network.
Exploitation: There is no known exploitation of GSD-2022-1004945 in the wild and no public exploit code.

Affected packages and fixed versions:
- Kernel (Linux): affected all versions; no fix listed

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/GSD-2022-1004945/ (Markdown: https://insights.sbomify.com/GSD-2022-1004945/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1004945

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1004945/
Summaries are generated and may contain mistakes; the official description above is the record.