# CVE-2004-0565: Information disclosure in n/a

> Local attackers can read floating-point register values from other processes due to missing FPH owner verification in Linux kernel context switching.

- **Severity:** Low 2.1 (`AV:L/AC:L/Au:N/C:P/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:** 8 Jul 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-g33f-v4ch-cw4g

## What is CVE-2004-0565?

CVE-2004-0565 is a low-severity vulnerability in Gentoo Linux, published on 8 Jul 2004. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Floating point information leak in the context switch code for Linux 2.4.x only checks the MFH bit but does not verify the FPH owner, which allows local users to read register values of other processes by setting the MFH bit.

## Which versions are affected by CVE-2004-0565?

It affects 6 products.


Products: Gentoo Linux, Linux kernel, Mandrakesoft Mandrake Linux, Mandrakesoft Mandrake Linux Corporate Server, Mandrakesoft Mandrake Multi Network Firewall, Trustix Secure Linux.

## How do I fix CVE-2004-0565?

Apply the vendor's patch.

## Is CVE-2004-0565 being exploited?

There is no known exploitation of CVE-2004-0565 in the wild and no public exploit code.

## Other vulnerabilities in Gentoo Linux

- [CVE-2004-0914](https://insights.sbomify.com/CVE-2004-0914/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-1037](https://insights.sbomify.com/CVE-2004-1037/): Command injection in n/a (critical 10.0)
- [CVE-2004-1034](https://insights.sbomify.com/CVE-2004-1034/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0891](https://insights.sbomify.com/CVE-2004-0891/): Memory corruption in n/a (critical 10.0)
- [CVE-2002-1337](https://insights.sbomify.com/CVE-2002-1337/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0565 and fix it if it is affected.

What it is: CVE-2004-0565 is a low-severity vulnerability in Gentoo Linux, published on 8 Jul 2004. 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-2004-0565 in the wild and no public exploit code.

Affected product: Gentoo 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-2004-0565/ (Markdown: https://insights.sbomify.com/CVE-2004-0565/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0565
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0565
- OSV: https://osv.dev/vulnerability/CVE-2004-0565

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0565/
Summaries are generated and may contain mistakes; the official description above is the record.