# GSD-2023-1001148: bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data

> A use-after-free vulnerability in the Linux kernel sockmap allows attackers to cause denial of service or potentially escalate privileges.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Jan 2023

## What is GSD-2023-1001148?

GSD-2023-1001148 is an use after free vulnerability in Kernel, published on 17 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data

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 v5.15.86 by commit 8786bde11a4f31b63b3036731df0b47337a7a245, it was introduced in version v5.15 by commit cd9733f5d75c94a32544d6ce5be47e14194cf137. For more details please see the references link.

## Which versions are affected by GSD-2023-1001148?

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-2023-1001148?

No fix has been published for GSD-2023-1001148 yet. Limit exposure of the affected software until one is available.

## Is GSD-2023-1001148 being exploited?

There is no known exploitation of GSD-2023-1001148 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GSD-2023-1001148 and fix it if it is affected.

What it is: GSD-2023-1001148 is an use after free vulnerability in Kernel, published on 17 Jan 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 GSD-2023-1001148 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-2023-1001148/ (Markdown: https://insights.sbomify.com/GSD-2023-1001148/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GSD-2023-1001148

---
From sbomify Insights: https://insights.sbomify.com/GSD-2023-1001148/
Summaries are generated and may contain mistakes; the official description above is the record.