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    Ubuntu 3104-1: Linux kernel vulnerability

    Date
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    Posted By
    The system could be made to run programs as an administrator.
    ==========================================================================
    Ubuntu Security Notice USN-3104-1
    October 20, 2016
    
    linux vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    The system could be made to run programs as an administrator.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    It was discovered that a race condition existed in the memory manager of
    the Linux kernel when handling copy-on-write breakage of private read-only
    memory mappings. A local attacker could use this to gain administrative
    privileges.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      linux-image-3.2.0-113-generic   3.2.0-113.155
      linux-image-3.2.0-113-generic-pae  3.2.0-113.155
      linux-image-3.2.0-113-highbank  3.2.0-113.155
      linux-image-3.2.0-113-omap      3.2.0-113.155
      linux-image-3.2.0-113-powerpc-smp  3.2.0-113.155
      linux-image-3.2.0-113-powerpc64-smp  3.2.0-113.155
      linux-image-3.2.0-113-virtual   3.2.0-113.155
    
    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-3104-1
      CVE-2016-5195
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/3.2.0-113.155
    

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