# CVE-2006-5649: Denial of service in n/a

> Local attackers can cause a kernel panic on PowerPC Ubuntu systems via alignment check exception handling flaws.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 14 Dec 2006
- **Updated:** 3 Apr 2025
- **Also known as:** GHSA-qww3-wjff-2gj7

## What is CVE-2006-5649?

CVE-2006-5649 is a medium-severity denial of service vulnerability in Ubuntu Ubuntu Linux, published on 14 Dec 2006. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Unspecified vulnerability in the "alignment check exception handling" in Ubuntu 5.10, 6.06 LTS, and 6.10 for the PowerPC (PPC) allows local users to cause a denial of service (kernel panic) via unspecified vectors.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2006-5649?

It affects 1 product.


Products: Ubuntu Ubuntu Linux.

## How do I fix CVE-2006-5649?

Apply the vendor's patch.

## Is CVE-2006-5649 being exploited?

There is no known exploitation of CVE-2006-5649 in the wild and no public exploit code.

## Other vulnerabilities in Ubuntu Ubuntu Linux

- [CVE-2010-0834](https://insights.sbomify.com/CVE-2010-0834/): Auth bypass in n/a (critical 9.3)
- [CVE-2006-3597](https://insights.sbomify.com/CVE-2006-3597/): Auth bypass in n/a (high 7.2)
- [CVE-2006-3378](https://insights.sbomify.com/CVE-2006-3378/): Privilege escalation in n/a (high 7.2)
- [CVE-2006-1183](https://insights.sbomify.com/CVE-2006-1183/): Information disclosure in n/a (high 7.2)
- [CVE-2009-0578](https://insights.sbomify.com/CVE-2009-0578/): Missing authorization in n/a (medium 6.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-5649 and fix it if it is affected.

What it is: CVE-2006-5649 is a medium-severity denial of service vulnerability in Ubuntu Ubuntu Linux, published on 14 Dec 2006. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2006-5649 in the wild and no public exploit code.

Affected product: Ubuntu 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-2006-5649/ (Markdown: https://insights.sbomify.com/CVE-2006-5649/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-5649
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-5649
- OSV: https://osv.dev/vulnerability/CVE-2006-5649

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-5649/
Summaries are generated and may contain mistakes; the official description above is the record.