# CVE-2011-2480: Information Disclosure vulnerability in the 802.11 stack, as used in FreeBSD before 8.2 and NetBSD when using certain non-x86 architectures.


- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 27 Nov 2019
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-44jh-wjf8-4jgx

## What is CVE-2011-2480?

CVE-2011-2480 is a high-severity vulnerability in Freebsd Freebsd, published on 27 Nov 2019. 

### Official description

Information Disclosure vulnerability in the 802.11 stack, as used in FreeBSD before 8.2 and NetBSD when using certain non-x86 architectures. A signedness error in the IEEE80211_IOC_CHANINFO ioctl allows a local unprivileged user to cause the kernel to copy large amounts of kernel memory back to the user, disclosing potentially sensitive information.

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

## Which versions are affected by CVE-2011-2480?

It affects 2 products.


Products: Freebsd Freebsd, Netbsd Netbsd.

## How do I fix CVE-2011-2480?

No fix has been published for CVE-2011-2480 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-2480 being exploited?

There is no known exploitation of CVE-2011-2480 in the wild and no public exploit code.

## Other vulnerabilities in Freebsd Freebsd

- [CVE-2018-17160](https://insights.sbomify.com/CVE-2018-17160/): Memory corruption in FreeBSD (critical 10.0)
- [CVE-2014-3954](https://insights.sbomify.com/CVE-2014-3954/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-4304](https://insights.sbomify.com/CVE-2006-4304/): Memory corruption in n/a (critical 10.0)
- [CVE-2006-0226](https://insights.sbomify.com/CVE-2006-0226/): Integer overflow in n/a (critical 10.0)
- [CVE-2004-0002](https://insights.sbomify.com/CVE-2004-0002/): Denial of service in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-2480 and fix it if it is affected.

What it is: CVE-2011-2480 is a high-severity vulnerability in Freebsd Freebsd, published on 27 Nov 2019. 
Exploitation: There is no known exploitation of CVE-2011-2480 in the wild and no public exploit code.

Affected product: Freebsd Freebsd. 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-2011-2480/ (Markdown: https://insights.sbomify.com/CVE-2011-2480/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-2480
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-2480
- OSV: https://osv.dev/vulnerability/CVE-2011-2480

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-2480/
Summaries are generated and may contain mistakes; the official description above is the record.