---
title: "CVE-2012-6422\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-2012-6422?format=md
keywords: index, follow
---

# CVE-2012-6422

Publication date 18 December 2012

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The kernel in Samsung Galaxy S2, Galaxy Note 2, MEIZU MX, and possibly
other Android devices, when running an Exynos 4210 or 4412 processor, uses
weak permissions (0666) for /dev/exynos-mem, which allows attackers to read
or write arbitrary physical memory and gain privileges via a crafted
application, as demonstrated by ExynosAbuse.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-6422?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| linux-flo | 13.10 saucy | Not in release |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Not in release |
| linux-goldfish | 13.10 saucy | Ignored |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Not in release |
| linux-grouper | 13.10 saucy | Ignored |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Not in release |
| linux-maguro | 13.10 saucy | Ignored |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Not in release |
| linux-mako | 13.10 saucy | Ignored |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Not in release |
| linux-manta | 13.10 saucy | Ignored |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | 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)

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

android kernels (goldfish, grouper, maguro, mako and manta) are not
supported on the Ubuntu Touch 13.10 preview kernels
/dev/exynos-mem not used on reference devices

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6422)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-6422)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-6422)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-6422)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2012-6422>