Ubuntu 1515-1: Linux kernel vulnerability

    Date23 Jul 2012
    CategoryUbuntu
    33
    Posted ByLinuxSecurity Advisories
    The system could be made to crash under certain conditions.
    ==========================================================================
    Ubuntu Security Notice USN-1515-1
    July 23, 2012
    
    linux vulnerability
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    The system could be made to crash under certain conditions.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    An error was discovered in the Linux kernel's memory subsystem (hugetlb).
    An unprivileged local user could exploit this flaw to cause a denial of
    service (crash the system).
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      linux-image-3.2.0-27-generic    3.2.0-27.43
      linux-image-3.2.0-27-generic-pae  3.2.0-27.43
      linux-image-3.2.0-27-highbank   3.2.0-27.43
      linux-image-3.2.0-27-omap       3.2.0-27.43
      linux-image-3.2.0-27-powerpc-smp  3.2.0-27.43
      linux-image-3.2.0-27-powerpc64-smp  3.2.0-27.43
      linux-image-3.2.0-27-virtual    3.2.0-27.43
    
    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-1515-1
      CVE-2012-2390
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/3.2.0-27.43
    
    
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