Ubuntu 3128-1: Linux kernel vulnerability

    Date 11 Nov 2016
    454
    Posted By LinuxSecurity Advisories
    The system could be made to crash under certain conditions.
    ==========================================================================
    Ubuntu Security Notice USN-3128-1
    November 11, 2016
    
    linux vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    The system could be made to crash under certain conditions.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    Ondrej Kozina discovered that the keyring interface in the Linux kernel
    contained a buffer overflow when displaying timeout events via the
    /proc/keys interface. A local attacker could use this 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 16.04 LTS:
      linux-image-4.4.0-47-generic    4.4.0-47.68
      linux-image-4.4.0-47-generic-lpae  4.4.0-47.68
      linux-image-4.4.0-47-lowlatency  4.4.0-47.68
      linux-image-4.4.0-47-powerpc-e500mc  4.4.0-47.68
      linux-image-4.4.0-47-powerpc-smp  4.4.0-47.68
      linux-image-4.4.0-47-powerpc64-emb  4.4.0-47.68
      linux-image-4.4.0-47-powerpc64-smp  4.4.0-47.68
      linux-image-generic             4.4.0.47.50
      linux-image-generic-lpae        4.4.0.47.50
      linux-image-lowlatency          4.4.0.47.50
      linux-image-powerpc-e500mc      4.4.0.47.50
      linux-image-powerpc-smp         4.4.0.47.50
      linux-image-powerpc64-emb       4.4.0.47.50
      linux-image-powerpc64-smp       4.4.0.47.50
      linux-image-virtual             4.4.0.47.50
    
    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://www.ubuntu.com/usn/usn-3128-1
      CVE-2016-7042
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.4.0-47.68
    

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