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Ubuntu 14.04 LTS USN-3034-1 Critical: Linux Kernel Denial Of Service

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Calendar Grey July 14, 2016
Scroller Ubuntu
Ubuntu Security Notice USN-3078-1 addresses a critical vulnerability affecting the kernel, leading to unexpected failures; updates ready for Ubuntu 16.04 LTS.
The system could be made to crash under certain conditions.

Summary

The system could be made to crash under certain conditions.

Software Description:

- linux: Linux kernel

Details:

Jan Stancek discovered that the Linux kernel's memory manager did not

properly handle moving pages mapped by the asynchronous I/O (AIO) ring

buffer to the other nodes. A local attacker could use this to cause a

denial of service (system crash).

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu system crash linux kernel

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-92-generic   3.13.0-92.139
  linux-image-3.13.0-92-generic-lpae  3.13.0-92.139
  linux-image-3.13.0-92-lowlatency  3.13.0-92.139
  linux-image-3.13.0-92-powerpc-e500  3.13.0-92.139
  linux-image-3.13.0-92-powerpc-e500mc  3.13.0-92.139
  linux-image-3.13.0-92-powerpc-smp  3.13.0-92.139
  linux-image-3.13.0-92-powerpc64-emb  3.13.0-92.139
  linux-image-3.13.0-92-powerpc64-smp  3.13.0-92.139

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-3034-1

CVE-2016-3070

Severity
critical
Lowest
Low
Medium
High
Critical

July 14, 2016

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu system crash linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-92.139

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