Ubuntu 3674-1: Linux kernel vulnerabilities

    Date11 Jun 2018
    CategoryUbuntu
    1114
    Posted ByAnthony Pell
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3674-1
    June 11, 2018
    
    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 Linux kernel.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    It was discovered that the netfilter subsystem of the Linux kernel did not
    properly validate ebtables offsets. A local attacker could use this to
    cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2018-1068)
    
    It was discovered that a NULL pointer dereference existed in the RDS
    (Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
    local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-7492)
    
    Eyal Itkin discovered that the USB displaylink video adapter driver in the
    Linux kernel did not properly validate mmap offsets sent from userspace. A
    local attacker could use this to expose sensitive information (kernel
    memory) or possibly execute arbitrary code. (CVE-2018-8781)
    
    Xingyuan Lin discovered that a out-of-bounds read existed in the USB Video
    Class (UVC) driver of the Linux kernel. A local attacker could use this to
    expose sensitive information (kernel memory). (CVE-2017-0627)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      linux-image-3.13.0-151-generic  3.13.0-151.201
      linux-image-3.13.0-151-generic-lpae  3.13.0-151.201
      linux-image-3.13.0-151-lowlatency  3.13.0-151.201
      linux-image-3.13.0-151-powerpc-e500  3.13.0-151.201
      linux-image-3.13.0-151-powerpc-e500mc  3.13.0-151.201
      linux-image-3.13.0-151-powerpc-smp  3.13.0-151.201
      linux-image-3.13.0-151-powerpc64-emb  3.13.0-151.201
      linux-image-3.13.0-151-powerpc64-smp  3.13.0-151.201
      linux-image-generic             3.13.0.151.161
      linux-image-generic-lpae        3.13.0.151.161
      linux-image-lowlatency          3.13.0.151.161
      linux-image-powerpc-e500        3.13.0.151.161
      linux-image-powerpc-e500mc      3.13.0.151.161
      linux-image-powerpc-smp         3.13.0.151.161
      linux-image-powerpc64-emb       3.13.0.151.161
      linux-image-powerpc64-smp       3.13.0.151.161
    
    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://usn.ubuntu.com/usn/usn-3674-1
      CVE-2017-0627, CVE-2018-1068, CVE-2018-7492, CVE-2018-8781
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/3.13.0-151.201
    
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