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Ubuntu 12.04 LTS USN-2975-2 Critical: Kernel DoS Security Issue

ubuntu
Calendar Grey May 16, 2016
Scroller Ubuntu
The Ubuntu Security Advisory USN-2975-2 highlights a vulnerability within the kernel that can lead to system instability or the execution of unauthorized administrative commands.
The system could be made to crash or run programs as an administrator.

Summary

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

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise

Details:

USN-2975-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04

LTS. This update provides the corresponding updates for the Linux

Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu

12.04 LTS.

Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did

not properly process certificate files with tags of indefinite length. A

local unprivileged attacker 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 ubuntu linux-lts-trusty trusty

Update Instructions

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

Ubuntu 12.04 LTS:
  linux-image-3.13.0-86-generic   3.13.0-86.131~precise1
  linux-image-3.13.0-86-generic-lpae  3.13.0-86.131~precise1

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-trusty, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-2975-2

https://ubuntu.com/security/notices/USN-2975-1

CVE-2016-0758

Severity
critical
Lowest
Low
Medium
High
Critical

May 16, 2016

Topics%20covered

Topics Covered

security advisory denial of service ubuntu linux-lts-trusty trusty

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-86.131~precise1

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