Ubuntu 2717-1: Linux kernel (Utopic HWE) vulnerability

    Date17 Aug 2015
    CategoryUbuntu
    27
    Posted ByLinuxSecurity Advisories
    The system could be made to crash under certain conditions.
    ==========================================================================
    Ubuntu Security Notice USN-2717-1
    August 18, 2015
    
    linux-lts-utopic 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-lts-utopic: Linux hardware enablement kernel from Utopic
    
    Details:
    
    Marcelo Ricardo Leitner discovered a race condition in the Linux kernel's
    SCTP address configuration lists when using Address Configuration Change
    (ASCONF) options on a socket. 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-3.16.0-46-generic   3.16.0-46.62~14.04.1
      linux-image-3.16.0-46-generic-lpae  3.16.0-46.62~14.04.1
      linux-image-3.16.0-46-lowlatency  3.16.0-46.62~14.04.1
      linux-image-3.16.0-46-powerpc-e500mc  3.16.0-46.62~14.04.1
      linux-image-3.16.0-46-powerpc-smp  3.16.0-46.62~14.04.1
      linux-image-3.16.0-46-powerpc64-emb  3.16.0-46.62~14.04.1
      linux-image-3.16.0-46-powerpc64-smp  3.16.0-46.62~14.04.1
    
    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. If
    you use linux-restricted-modules, you have to update that package as
    well to get modules which work with the new kernel version. Unless you
    manually uninstalled the standard kernel metapackages (e.g. linux-generic,
    linux-server, linux-powerpc), a standard system upgrade will automatically
    perform this as well.
    
    References:
      http://www.ubuntu.com/usn/usn-2717-1
      CVE-2015-3212
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-46.62~14.04.1
    
    
    
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