# CVE-2010-2537: Missing authorization in n/a

> Local users can overwrite append-only files in the Linux kernel Btrfs filesystem by exploiting improper access controls in clone ioctl calls.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **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:** No
- **Published:** 30 Sep 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-2whq-7q65-c6wv

## What is CVE-2010-2537?

CVE-2010-2537 is a high-severity missing authorization vulnerability in Canonical Ubuntu Linux, published on 30 Sep 2010. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The btrfs_ioctl_clone function in fs/btrfs/ioctl.c in the Linux kernel before 2.6.35 allows local users to overwrite an append-only file via a (1) BTRFS_IOC_CLONE or (2) BTRFS_IOC_CLONE_RANGE ioctl call that specifies this file as a donor.

## Which versions are affected by CVE-2010-2537?

It affects 5 products.


Products: Canonical Ubuntu Linux, Linux kernel, Suse Linux Enterprise High Availability Extension, Suse Suse Linux Enterprise Desktop, Suse Suse Linux Enterprise Server.

## How do I fix CVE-2010-2537?

No fix has been published for CVE-2010-2537 yet. Limit exposure of the affected software until one is available.

## Is CVE-2010-2537 being exploited?

There is no known exploitation of CVE-2010-2537 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-2537 and fix it if it is affected.

What it is: CVE-2010-2537 is a high-severity missing authorization vulnerability in Canonical Ubuntu Linux, published on 30 Sep 2010. 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-2010-2537 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. 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-2010-2537/ (Markdown: https://insights.sbomify.com/CVE-2010-2537/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-2537
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-2537
- OSV: https://osv.dev/vulnerability/CVE-2010-2537

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-2537/
Summaries are generated and may contain mistakes; the official description above is the record.