# CVE-2006-1859: Denial of service in n/a

> Attackers can cause a denial of service via memory consumption in the Linux kernel file locking subsystem due to a memory leak.

- **Severity:** Low 2.1 (`AV:L/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Not stated
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 May 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-4448-cvwr-2w8h

## What is CVE-2006-1859?

CVE-2006-1859 is a low-severity denial of service vulnerability in Linux kernel, published on 12 May 2006. 

### Official description

Memory leak in __setlease in fs/locks.c in Linux kernel before 2.6.16.16 allows attackers to cause a denial of service (memory consumption) via unspecified actions related to an "uninitialised return value," aka "slab leak."

## Which versions are affected by CVE-2006-1859?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2006-1859?

No fix has been published for CVE-2006-1859 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-1859 being exploited?

There is no known exploitation of CVE-2006-1859 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-2006-1859 and fix it if it is affected.

What it is: CVE-2006-1859 is a low-severity denial of service vulnerability in Linux kernel, published on 12 May 2006. 
Exploitation: There is no known exploitation of CVE-2006-1859 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-2006-1859/ (Markdown: https://insights.sbomify.com/CVE-2006-1859/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-1859
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-1859
- OSV: https://osv.dev/vulnerability/CVE-2006-1859

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-1859/
Summaries are generated and may contain mistakes; the official description above is the record.