# CVE-2009-2911: Privilege escalation in n/a

> Local attackers can escalate privileges or cause denial of service via kernel stack overflows in SystemTap when the unprivileged option is enabled.

- **Severity:** Low 1.9 (`AV:L/AC:M/Au:N/C:N/I:N/A:P`)
- **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:** 22 Oct 2009
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2009-2911, GHSA-pq5x-qrx9-87q4

## What is CVE-2009-2911?

CVE-2009-2911 is a low-severity vulnerability in n/a, published on 22 Oct 2009. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

SystemTap 1.0, when the --unprivileged option is used, does not properly restrict certain data sizes, which allows local users to (1) cause a denial of service or gain privileges via a print operation with a large number of arguments that trigger a kernel stack overflow, (2) cause a denial of service via crafted DWARF expressions that trigger a kernel stack frame overflow, or (3) cause a denial of service (infinite loop) via vectors that trigger creation of large unwind tables, related to Common Information Entry (CIE) and Call Frame Instruction (CFI) records.

Weakness: CWE-264

## Which versions are affected by CVE-2009-2911?

It affects 1 product.


Products: Systemtap Systemtap.

## How do I fix CVE-2009-2911?

Apply the vendor's patch.

## Is CVE-2009-2911 being exploited?

There is no known exploitation of CVE-2009-2911 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2009-4273](https://insights.sbomify.com/CVE-2009-4273/): Command injection in n/a (critical 10.0)
- [CVE-2010-0412](https://insights.sbomify.com/CVE-2010-0412/): Command injection in n/a (high 7.5)
- [CVE-2010-4170](https://insights.sbomify.com/CVE-2010-4170/): Privilege escalation in n/a (high 7.2)
- [CVE-2012-0875](https://insights.sbomify.com/CVE-2012-0875/): Information disclosure in n/a (medium 5.4)
- [CVE-2010-0411](https://insights.sbomify.com/CVE-2010-0411/): Integer overflow in n/a (medium 4.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-2911 and fix it if it is affected.

What it is: CVE-2009-2911 is a low-severity vulnerability in n/a, published on 22 Oct 2009. 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-2009-2911 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-2009-2911/ (Markdown: https://insights.sbomify.com/CVE-2009-2911/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-2911
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-2911
- OSV: https://osv.dev/vulnerability/CVE-2009-2911

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-2911/
Summaries are generated and may contain mistakes; the official description above is the record.