---
title: "CVE-2008-2812\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-2008-2812?format=md
keywords: index, follow
---

# CVE-2008-2812

Publication date 9 July 2008

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.8 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2008-2812?format=md#impact-score)

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## Description

The Linux kernel before 2.6.25.10 does not properly perform tty operations,
which allows local users to cause a denial of service (system crash) or
possibly gain privileges via vectors involving NULL pointer dereference of
function pointers in (1) hamradio/6pack.c, (2) hamradio/mkiss.c, (3)
irda/irtty-sir.c, (4) ppp\_async.c, (5) ppp\_synctty.c, (6) slip.c, (7)
wan/x25\_asy.c, and (8) wireless/strip.c in drivers/net/.

### From the Ubuntu Security Team

It was discovered that there were multiple NULL-pointer function
dereferences in the Linux kernel terminal handling code. A local
attacker could exploit this to execute arbitrary code as root, or crash
the system, leading to a denial of service.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| linux | 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Fixed 2.6.24-19.41 |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Not in release |
| linux-source-2.6.15 | 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Not in release |
| 6.06 LTS dapper | Fixed 2.6.15-52.71 |
| linux-source-2.6.20 | 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Not in release |
| 7.04 feisty | Fixed 2.6.20-17.39 |
| 6.06 LTS dapper | Not in release |
| linux-source-2.6.22 | 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 7.10 gutsy | Fixed 2.6.22-15.58 |
| 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**

7.8 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.8 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2812)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2008-2812)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2008-2812)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2008-2812)

### Related Ubuntu Security Notices (USN)

+ [USN-637-1](https://usn.ubuntu.com/USN-637-1)
+ Linux kernel vulnerabilities
+ 25 August 2008

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2008-2812>