# CVE-2009-3001: Information disclosure in n/a

> Local attackers can read uninitialized kernel memory via getsockname on AF_LLC sockets, potentially exposing sensitive data.

- **Severity:** Medium 4.9 (`AV:L/AC:L/Au:N/C:C/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Aug 2009
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-5pcq-rhwq-4w2j

## What is CVE-2009-3001?

CVE-2009-3001 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 28 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The llc_ui_getname function in net/llc/af_llc.c in the Linux kernel 2.6.31-rc7 and earlier does not initialize a certain data structure, which allows local users to read the contents of some kernel memory locations by calling getsockname on an AF_LLC socket.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2009-3001?

It affects 2 products.


Products: Canonical Ubuntu Linux, Linux kernel.

## How do I fix CVE-2009-3001?

Apply the vendor's patch.

## Is CVE-2009-3001 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3001 exists.

Public exploit code:

- Linux Kernel 2.6.31-rc7 - 'AF_LLC getsockname' 5-Byte Stack Disclosure (exploitdb)

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-3001 and fix it if it is affected.

What it is: CVE-2009-3001 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 28 Aug 2009. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-3001 exists.

Affected product: Canonical Ubuntu 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-2009-3001/ (Markdown: https://insights.sbomify.com/CVE-2009-3001/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-3001
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-3001
- OSV: https://osv.dev/vulnerability/CVE-2009-3001

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-3001/
Summaries are generated and may contain mistakes; the official description above is the record.