1. Ubuntu Security Notices
  2. USN-2762-1

USN-2762-1: Linux kernel vulnerability

Publication date

5 October 2015

Overview

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

Releases

Packages

Details

Dmitry Vyukov discovered that the Linux kernel did not properly initialize
IPC object state in certain situations. A local attacker could use this to
escalate their privileges, expose confidential information, or cause a
denial of service (system crash).

Dmitry Vyukov discovered that the Linux kernel did not properly initialize
IPC object state in certain situations. A local attacker could use this to
escalate their privileges, expose confidential information, or cause a
denial of service (system crash).

Update instructions

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

Learn more about how to get the fixes.

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. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well.

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

Ubuntu Release Package Version
15.04 vivid linux-image-3.19.0-30-powerpc64-smp –  3.19.0-30.34
linux-image-3.19.0-30-generic –  3.19.0-30.34
linux-image-3.19.0-30-powerpc64-emb –  3.19.0-30.34
linux-image-3.19.0-30-powerpc-smp –  3.19.0-30.34
linux-image-3.19.0-30-generic-lpae –  3.19.0-30.34
linux-image-3.19.0-30-lowlatency –  3.19.0-30.34
linux-image-3.19.0-30-powerpc-e500mc –  3.19.0-30.34

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References

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