Ubuntu 3083-2: Linux kernel (Trusty HWE) vulnerabilities

    Date19 Sep 2016
    77
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3083-2
    September 19, 2016
    
    linux-lts-trusty vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise
    
    Details:
    
    USN-3083-1 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 LTS.
    
    Dmitry Vyukov discovered that the IPv6 implementation in the Linux kernel
    did not properly handle options data, including a use-after-free. A local
    attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code. (CVE-2016-3841)
    
    It was discovered that a race condition existed when handling heartbeat-
    timeout events in the SCTP implementation of the Linux kernel. A remote
    attacker could use this to cause a denial of service. (CVE-2015-8767)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      linux-image-3.13.0-96-generic   3.13.0-96.143~precise1
      linux-image-3.13.0-96-generic-lpae  3.13.0-96.143~precise1
    
    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.
    
    References:
      https://www.ubuntu.com/usn/usn-3083-2
      https://www.ubuntu.com/usn/usn-3083-1
      CVE-2015-8767, CVE-2016-3841
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-96.143~precise1
    

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