# CVE-2011-0431: Denial of service in n/a

> Attackers can cause a denial of service in OpenAFS kernel modules by exploiting improper error handling in the lock function.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Feb 2011
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2011-0431, GHSA-2gc9-pwg3-hg5r

## What is CVE-2011-0431?

CVE-2011-0431 is a medium-severity denial of service vulnerability in n/a, published on 18 Feb 2011. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The afs_linux_lock function in afs/LINUX/osi_vnodeops.c in the kernel module in OpenAFS 1.4.14, 1.4.12, 1.4.7, and possibly other versions does not properly handle errors, which allows attackers to cause a denial of service via unknown vectors.  NOTE: some of these details are obtained from third party information.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2011-0431?

It affects 1 product.


Products: Openafs Openafs.

## How do I fix CVE-2011-0431?

Apply the vendor's patch.

## Is CVE-2011-0431 being exploited?

There is no known exploitation of CVE-2011-0431 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2009-1251](https://insights.sbomify.com/CVE-2009-1251/): Memory corruption in n/a (critical 10.0)
- [CVE-2024-10394](https://insights.sbomify.com/CVE-2024-10394/): Theft of credentials in Unix client PAGs (high 8.4)
- [CVE-2024-10397](https://insights.sbomify.com/CVE-2024-10397/): Preallocated buffer overflows in XDR responses (high 7.7)
- [CVE-2019-18601](https://insights.sbomify.com/CVE-2019-18601/): Denial of service in n/a (high 7.5)
- [CVE-2011-0430](https://insights.sbomify.com/CVE-2011-0430/): Use after free in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-0431 and fix it if it is affected.

What it is: CVE-2011-0431 is a medium-severity denial of service vulnerability in n/a, published on 18 Feb 2011. 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-2011-0431 in the wild and no public exploit code.

Affected product: n/a. 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-2011-0431/ (Markdown: https://insights.sbomify.com/CVE-2011-0431/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-0431
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-0431
- OSV: https://osv.dev/vulnerability/CVE-2011-0431

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-0431/
Summaries are generated and may contain mistakes; the official description above is the record.