# CVE-2011-1173: Information disclosure in n/a

> Remote attackers can read uninitialized kernel stack memory via Econet packets, potentially exposing sensitive information.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Jun 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-mq36-8q5f-7672

## What is CVE-2011-1173?

CVE-2011-1173 is a medium-severity vulnerability in Linux kernel, published on 22 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The econet_sendmsg function in net/econet/af_econet.c in the Linux kernel before 2.6.39 on the x86_64 platform allows remote attackers to obtain potentially sensitive information from kernel stack memory by reading uninitialized data in the ah field of an Acorn Universal Networking (AUN) packet.

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

## Which versions are affected by CVE-2011-1173?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2011-1173?

Upgrade to a fixed version.

## Is CVE-2011-1173 being exploited?

There is no known exploitation of CVE-2011-1173 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2011-1173 and fix it if it is affected.

What it is: CVE-2011-1173 is a medium-severity vulnerability in Linux kernel, published on 22 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2011-1173 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2011-1173/ (Markdown: https://insights.sbomify.com/CVE-2011-1173/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-1173
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-1173
- OSV: https://osv.dev/vulnerability/CVE-2011-1173

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-1173/
Summaries are generated and may contain mistakes; the official description above is the record.