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    Ubuntu 2978-2: Linux kernel (Wily HWE) vulnerabilities

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    Several security issues were fixed in the kernel.
    Ubuntu Security Notice USN-2978-2
    May 16, 2016
    linux-lts-wily vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 14.04 LTS
    Several security issues were fixed in the kernel.
    Software Description:
    - linux-lts-wily: Linux hardware enablement kernel from Wily for Trusty
    USN-2978-1 fixed vulnerabilities in the Linux kernel for Ubuntu 15.10.
    This update provides the corresponding updates for the Linux Hardware
    Enablement (HWE) kernel from Ubuntu 15.10 for Ubuntu 14.04 LTS.
    David Matlack discovered that the Kernel-based Virtual Machine (KVM)
    implementation in the Linux kernel did not properly restrict variable
    Memory Type Range Registers (MTRR) in KVM guests. A privileged user in a
    guest VM could use this to cause a denial of service (system crash) in the
    host, expose sensitive information from the host, or possibly gain
    administrative privileges in the host. (CVE-2016-3713)
    Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did
    not properly process certificate files with tags of indefinite length. A
    local unprivileged attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code with administrative
    privileges. (CVE-2016-0758)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 14.04 LTS:
      linux-image-4.2.0-36-generic    4.2.0-36.42~14.04.1
      linux-image-4.2.0-36-generic-lpae  4.2.0-36.42~14.04.1
      linux-image-4.2.0-36-lowlatency  4.2.0-36.42~14.04.1
      linux-image-4.2.0-36-powerpc-e500mc  4.2.0-36.42~14.04.1
      linux-image-4.2.0-36-powerpc-smp  4.2.0-36.42~14.04.1
      linux-image-4.2.0-36-powerpc64-emb  4.2.0-36.42~14.04.1
      linux-image-4.2.0-36-powerpc64-smp  4.2.0-36.42~14.04.1
    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.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-wily, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.
      CVE-2016-0758, CVE-2016-3713
    Package Information:

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