USN-2271-1: Linux kernel (Saucy HWE) vulnerability

5 July 2014

linux-lts-saucy vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 LTS

Summary

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

Software Description

  • linux-lts-saucy - Linux hardware enablement kernel from Saucy

Details

Andy Lutomirski discovered a flaw with the Linux kernel’s ptrace syscall on x86_64 processors. An attacker could exploit this flaw to cause a denial of service (System Crash) or potential gain administrative privileges.

Update instructions

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

Ubuntu 12.04 LTS
linux-image-3.11.0-24-generic - 3.11.0-24.42~precise1
linux-image-3.11.0-24-generic-lpae - 3.11.0-24.42~precise1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References