Ubuntu 2731-1: Linux kernel vulnerability

    Date03 Sep 2015
    66
    Posted ByLinuxSecurity Advisories
    The system could be made to expose sensitive information.
    ==========================================================================
    Ubuntu Security Notice USN-2731-1
    September 03, 2015
    
    linux vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    The system could be made to expose sensitive information.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    Benjamin Randazzo discovered an information leak in the md (multiple
    device) driver when the bitmap_info.file is disabled. A local privileged
    attacker could use this to obtain sensitive information from the kernel.
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      linux-image-3.2.0-90-generic    3.2.0-90.128
      linux-image-3.2.0-90-generic-pae  3.2.0-90.128
      linux-image-3.2.0-90-highbank   3.2.0-90.128
      linux-image-3.2.0-90-omap       3.2.0-90.128
      linux-image-3.2.0-90-powerpc-smp  3.2.0-90.128
      linux-image-3.2.0-90-powerpc64-smp  3.2.0-90.128
      linux-image-3.2.0-90-virtual    3.2.0-90.128
    
    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:
      https://www.ubuntu.com/usn/usn-2731-1
      CVE-2015-5697
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/3.2.0-90.128
    

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