# GSD-2022-1004795: seg6: bpf: fix skb checksum in bpf_push_seg6_encap()

> A checksum calculation error in the Linux kernel's Segment Routing over IPv6 BPF encapsulation function was fixed.

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

## What is GSD-2022-1004795?

GSD-2022-1004795 is a vulnerability in Kernel, published on 31 Jul 2022. 

### Official description

seg6: bpf: fix skb checksum in bpf_push_seg6_encap()

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 v4.19.253 by commit 6d6c8b40ab84cc038b24759ec67176179b19afe2, it was introduced in version v4.18 by commit fe94cc290f535709d3c5ebd1e472dfd0aec7ee79. For more details please see the references link.

## Which versions are affected by GSD-2022-1004795?

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-2022-1004795?

No fix has been published for GSD-2022-1004795 yet. Limit exposure of the affected software until one is available.

## Is GSD-2022-1004795 being exploited?

There is no known exploitation of GSD-2022-1004795 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2022-1004795 and fix it if it is affected.

What it is: GSD-2022-1004795 is a vulnerability in Kernel, published on 31 Jul 2022. 
Exploitation: There is no known exploitation of GSD-2022-1004795 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-2022-1004795/ (Markdown: https://insights.sbomify.com/GSD-2022-1004795/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2022-1004795

---
From sbomify Insights: https://insights.sbomify.com/GSD-2022-1004795/
Summaries are generated and may contain mistakes; the official description above is the record.