# CVE-2010-4347: Privilege escalation in n/a

> Local attackers can escalate privileges by exploiting insecure permissions on the ACPI debugfs custom_method file in the Linux kernel.

- **Severity:** Medium 6.9 (`AV:L/AC:M/Au:N/C:C/I:C/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:** 22 Dec 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-vpxp-m77w-89hf

## What is CVE-2010-4347?

CVE-2010-4347 is a medium-severity vulnerability in Linux kernel, published on 22 Dec 2010. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The ACPI subsystem in the Linux kernel before 2.6.36.2 uses 0222 permissions for the debugfs custom_method file, which allows local users to gain privileges by placing a custom ACPI method in the ACPI interpreter tables, related to the acpi_debugfs_init function in drivers/acpi/debugfs.c.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2010-4347?

It affects 3 products.


Products: Linux kernel, Opensuse Opensuse, Suse Linux Enterprise Real Time Extension.

## How do I fix CVE-2010-4347?

Apply the vendor's patch.

## Is CVE-2010-4347 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-4347 exists.

Public exploit code:

- Linux Kernel < 2.6.37-rc2 - 'ACPI custom_method' Local Privilege Escalation (exploitdb)

## 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-2010-4347 and fix it if it is affected.

What it is: CVE-2010-4347 is a medium-severity vulnerability in Linux kernel, published on 22 Dec 2010. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-4347 exists.

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-2010-4347/ (Markdown: https://insights.sbomify.com/CVE-2010-4347/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-4347
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-4347
- OSV: https://osv.dev/vulnerability/CVE-2010-4347

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-4347/
Summaries are generated and may contain mistakes; the official description above is the record.