Ubuntu 3419-2: Linux kernel (HWE) vulnerabilities

    Date18 Sep 2017
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    Ubuntu Security Notice USN-3419-2
    September 18, 2017
    linux-hwe vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 16.04 LTS
    Several security issues were fixed in the Linux kernel.
    Software Description:
    - linux-hwe: Linux hardware enablement (HWE) kernel
    USN-3419-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04.
    This update provides the corresponding updates for the Linux Hardware
    Enablement (HWE) kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS.
    It was discovered that a buffer overflow existed in the Bluetooth stack of
    the Linux kernel when handling L2CAP configuration responses. A physically
    proximate attacker could use this to cause a denial of service (system
    crash). (CVE-2017-1000251)
    It was discovered that a buffer overflow existed in the Broadcom FullMAC
    WLAN driver in the Linux kernel. A local attacker could use this to cause a
    denial of service (system crash) or possibly execute arbitrary code.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 16.04 LTS:
      linux-image-4.10.0-35-generic   4.10.0-35.39~16.04.1
      linux-image-4.10.0-35-generic-lpae  4.10.0-35.39~16.04.1
      linux-image-4.10.0-35-lowlatency  4.10.0-35.39~16.04.1
    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-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.
      CVE-2017-1000251, CVE-2017-7541
    Package Information:
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