Ubuntu 3071-1: Linux kernel vulnerabilities

    Date29 Aug 2016
    CategoryUbuntu
    86
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3071-1
    August 29, 2016
    
    linux vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    Kangjie Lu discovered an information leak in the Reliable Datagram Sockets
    (RDS) implementation in the Linux kernel. A local attacker could use this
    to obtain potentially sensitive information from kernel memory.
    (CVE-2016-5244)
    
    Yue Cao et al discovered a flaw in the TCP implementation's handling of
    challenge acks in the Linux kernel. A remote attacker could use this to
    cause a denial of service (reset connection) or inject content into an TCP
    stream. (CVE-2016-5696)
    
    Pengfei Wang discovered a race condition in the MIC VOP driver in the Linux
    kernel. A local attacker could use this to cause a denial of service
    (system crash) or obtain potentially sensitive information from kernel
    memory. (CVE-2016-5728)
    
    Cyril Bur discovered that on PowerPC platforms, the Linux kernel mishandled
    transactional memory state on exec(). A local attacker could use this to
    cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2016-5828)
    
    It was discovered that a heap based buffer overflow existed in the USB HID
    driver in the Linux kernel. A local attacker could use this cause a denial
    of service (system crash) or possibly execute arbitrary code.
    (CVE-2016-5829)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      linux-image-3.13.0-95-generic   3.13.0-95.142
      linux-image-3.13.0-95-generic-lpae  3.13.0-95.142
      linux-image-3.13.0-95-lowlatency  3.13.0-95.142
      linux-image-3.13.0-95-powerpc-e500  3.13.0-95.142
      linux-image-3.13.0-95-powerpc-e500mc  3.13.0-95.142
      linux-image-3.13.0-95-powerpc-smp  3.13.0-95.142
      linux-image-3.13.0-95-powerpc64-emb  3.13.0-95.142
      linux-image-3.13.0-95-powerpc64-smp  3.13.0-95.142
    
    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:
      http://www.ubuntu.com/usn/usn-3071-1
      CVE-2016-5244, CVE-2016-5696, CVE-2016-5728, CVE-2016-5828,
      CVE-2016-5829
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/3.13.0-95.142
    
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