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Ubuntu 12.04 LTS USN-2928-1 Critical: Kernel Admin Access Risk

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Calendar Grey March 14, 2016
Scroller Ubuntu
Ubuntu Security Notice USN-2929-1 deals with a vulnerability in the system daemon that could lead to privilege escalation or denial of service under direct access.
The system could be made to crash or run programs as an administrator bysomeone with physical access.

Summary

The system could be made to crash or run programs as an administrator by

someone with physical access.

Software Description:

- linux: Linux kernel

Details:

Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectly

performed a double-free. A local attacker with physical access could use

this to cause a denial of service (system crash) or possibly execute

arbitrary code with administrative privileges.

Topics%20covered

Topics Covered

security advisory denial of service kernel flaw ubuntu system crash administrative access

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
  linux-image-3.2.0-101-generic   3.2.0-101.141
  linux-image-3.2.0-101-generic-pae  3.2.0-101.141
  linux-image-3.2.0-101-highbank  3.2.0-101.141
  linux-image-3.2.0-101-omap      3.2.0-101.141
  linux-image-3.2.0-101-powerpc-smp  3.2.0-101.141
  linux-image-3.2.0-101-powerpc64-smp  3.2.0-101.141
  linux-image-3.2.0-101-virtual   3.2.0-101.141

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-2928-1

CVE-2016-2384

Severity
critical
Lowest
Low
Medium
High
Critical

March 14, 2016

Topics%20covered

Topics Covered

security advisory denial of service kernel flaw ubuntu system crash administrative access

Package Information

https://launchpad.net/ubuntu/+source/linux/3.2.0-101.141

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