Ubuntu 3445-2: Linux kernel vulnerabilities

    Date11 Oct 2017
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    Ubuntu Security Notice USN-3445-2
    October 11, 2017
    linux vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 12.04 ESM
    Several security issues were fixed in the Linux kernel.
    Software Description:
    - linux: Linux kernel
    USN-3445-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
    LTS. This update provides the corresponding updates for the Linux
    Hardware Enablement (HWE) kernel from Ubuntu 14.04 LTS for Ubuntu
    12.04 ESM.
    Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation
    in the Linux kernel contained a buffer overflow when handling fragmented
    packets. A remote attacker could use this to possibly execute arbitrary
    code with administrative privileges. (CVE-2016-8633)
    Andrey Konovalov discovered that a divide-by-zero error existed in the TCP
    stack implementation in the Linux kernel. A local attacker could use this
    to cause a denial of service (system crash). (CVE-2017-14106)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 12.04 ESM:
      linux-image-3.2.0-131-generic   3.2.0-131.177
      linux-image-3.2.0-131-generic-pae  3.2.0-131.177
      linux-image-3.2.0-131-highbank  3.2.0-131.177
      linux-image-3.2.0-131-omap      3.2.0-131.177
      linux-image-3.2.0-131-powerpc-smp  3.2.0-131.177
      linux-image-3.2.0-131-powerpc64-smp  3.2.0-131.177
      linux-image-3.2.0-131-virtual   3.2.0-131.177
    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.
      CVE-2016-8633, CVE-2017-14106
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