# CVE-2006-4814: Race condition in n/a

> A race condition in the Linux kernel's mincore function can cause a deadlock, leading to denial of service for local attackers.

- **Severity:** Medium 4.6 (`AV:L/AC:L/Au:S/C:N/I:N/A:C`)
- **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:** 20 Dec 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-w575-99g5-qw2v

## What is CVE-2006-4814?

CVE-2006-4814 is a medium-severity vulnerability in Linux kernel, published on 20 Dec 2006. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The mincore function in the Linux kernel before 2.4.33.6 does not properly lock access to user space, which has unspecified impact and attack vectors, possibly related to a deadlock.

Weakness: CWE-399

## Which versions are affected by CVE-2006-4814?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2006-4814?

Apply the vendor's patch.

## Is CVE-2006-4814 being exploited?

There is no known exploitation of CVE-2006-4814 in the wild and no public exploit code.

Public exploit code:

- A deadlock on the mmap semaphore ‘mmap sem’ in the CentOS 3.9 kernel, that is triggered by a specific interleaving of concurrent threads, one calling the mmap system call and the other calling the mincore system call. (github_poc): https://github.com/tagatac/linux-CVE-2006-4814

## 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-2006-4814 and fix it if it is affected.

What it is: CVE-2006-4814 is a medium-severity vulnerability in Linux kernel, published on 20 Dec 2006. 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-2006-4814 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-2006-4814/ (Markdown: https://insights.sbomify.com/CVE-2006-4814/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-4814
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-4814
- OSV: https://osv.dev/vulnerability/CVE-2006-4814

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-4814/
Summaries are generated and may contain mistakes; the official description above is the record.