---
title: "CVE-2007-6716\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2007-6716?format=md
keywords: index, follow
---

# CVE-2007-6716

Publication date 4 September 2008

Last updated 25 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2007-6716?format=md#impact-score)

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## Description

fs/direct-io.c in the dio subsystem in the Linux kernel before 2.6.23 does
not properly zero out the dio struct, which allows local users to cause a
denial of service (OOPS), as demonstrated by a certain fio test.

### From the Ubuntu Security Team

It was discovered that the direct-IO subsystem did not correctly
validate certain structures. A local attacker could exploit this to
cause a system crash, leading to a denial of service.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| linux | 8.04 LTS hardy | Not affected |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Not in release |
| linux-source-2.6.15 | 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Fixed 2.6.15-52.73 |
| linux-source-2.6.20 | 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Ignored end of life |
| 6.06 LTS dapper | Not in release |
| linux-source-2.6.22 | 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Fixed 2.6.22-15.59 |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.5 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6716)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2007-6716)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2007-6716)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2007-6716)

### Related Ubuntu Security Notices (USN)

+ [USN-659-1](https://usn.ubuntu.com/USN-659-1)
+ Linux kernel vulnerabilities
+ 27 October 2008

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2007-6716>