Ubuntu alert USN-2620-1 (kernel)

From:
    	     
 
John Johansen <john.johansen@canonical.com> 
To:
    	     
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
    	     
 
[USN-2620-1] Linux kernel vulnerability 
Date:
    	     
 
Sat, 23 May 2015 00:09:07 -0700
Message-ID:
    	     
 
<55602793.2090105@canonical.com>
==========================================================================
Ubuntu Security Notice USN-2620-1
May 23, 2015

linux vulnerability
==========================================================================

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

- Ubuntu 14.04 LTS

Summary:

The system could be made to crash under certain conditions.

Software Description:
- linux: Linux kernel

Details:

A flaw was discovered in the Linux kernel's IPv4 networking when using TCP
fast open to initiate a connection. An unprivileged local user could
exploit this flaw to cause a denial of service (system crash).

Update instructions:

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

Ubuntu 14.04 LTS:
  linux-image-3.13.0-53-generic   3.13.0-53.89
  linux-image-3.13.0-53-generic-lpae  3.13.0-53.89
  linux-image-3.13.0-53-lowlatency  3.13.0-53.89
  linux-image-3.13.0-53-powerpc-e500  3.13.0-53.89
  linux-image-3.13.0-53-powerpc-e500mc  3.13.0-53.89
  linux-image-3.13.0-53-powerpc-smp  3.13.0-53.89
  linux-image-3.13.0-53-powerpc64-emb  3.13.0-53.89
  linux-image-3.13.0-53-powerpc64-smp  3.13.0-53.89

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

References:
  http://www.ubuntu.com/usn/usn-2620-1
  CVE-2015-3332

Package Information:
  https://launchpad.net/ubuntu/+source/linux/3.13.0-53.89


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