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Ubuntu 16.04: USN-3151-3 Critical Denial Of Service in Snapdragon Kernel

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Calendar Grey December 6, 2016
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The latest Ubuntu Security Notice USN-3162-4 highlights a severe issue in the linux-raspberry service that may cause system failures or privilege escalation
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-snapdragon: Linux kernel for Snapdragon Processors

Details:

Philip Pettersson discovered a race condition in the af_packet

implementation in the Linux kernel. A local unprivileged attacker could use

this to cause a denial of service (system crash) or run arbitrary code with

administrative privileges.

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash snapdragon

Update Instructions

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

Ubuntu 16.04 LTS:
  linux-image-4.4.0-1039-snapdragon  4.4.0-1039.43
  linux-image-snapdragon          4.4.0.1039.31

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-3151-3

https://ubuntu.com/security/notices/USN-3151-1

CVE-2016-8655

Severity
critical
Lowest
Low
Medium
High
Critical

December 05, 2016

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash snapdragon

Package Information

https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1039.43

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