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Ubuntu 14.04 LTS USN-3290-1 Critical Denial of Service Risk

ubuntu
Calendar Grey May 17, 2017
Dist Ubuntu Esm H88
This notice pertains to an urgent FreeBSD kernel vulnerability that may result in system instability under certain scenarios.
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:

Marco Grassi discovered that the TCP implementation in the Linux kernel

mishandles socket buffer (skb) truncation. 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 kernel system crash linux

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-119-generic  3.13.0-119.166
  linux-image-3.13.0-119-generic-lpae  3.13.0-119.166
  linux-image-3.13.0-119-lowlatency  3.13.0-119.166
  linux-image-3.13.0-119-powerpc-e500  3.13.0-119.166
  linux-image-3.13.0-119-powerpc-e500mc  3.13.0-119.166
  linux-image-3.13.0-119-powerpc-smp  3.13.0-119.166
  linux-image-3.13.0-119-powerpc64-smp  3.13.0-119.166
  linux-image-generic             3.13.0.119.129
  linux-image-generic-lpae        3.13.0.119.129
  linux-image-lowlatency          3.13.0.119.129
  linux-image-powerpc-e500        3.13.0.119.129
  linux-image-powerpc-e500mc      3.13.0.119.129
  linux-image-powerpc-smp         3.13.0.119.129
  linux-image-powerpc64-smp       3.13.0.119.129

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-3290-1

CVE-2016-8645

Severity
critical
Lowest
Low
Medium
High
Critical

May 17, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel system crash linux

Package Information

https://launchpad.net/ubuntu/+source/linux/3.13.0-119.166

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