Ubuntu 3385-1: Linux kernel vulnerabilities

    Date10 Aug 2017
    CategoryUbuntu
    44
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3385-1
    August 11, 2017
    
    linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.04 LTS
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux: Linux kernel
    - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
    - linux-gke: Linux kernel for Google Container Engine (GKE) systems
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    
    Details:
    
    Andrey Konovalov discovered a race condition in the UDP Fragmentation
    Offload (UFO) code in the Linux kernel. A local attacker could use this to
    cause a denial of service or execute arbitrary code. (CVE-2017-1000112)
    
    Andrey Konovalov discovered a race condition in AF_PACKET socket option
    handling code in the Linux kernel. A local unprivileged attacker could use
    this to cause a denial of service or possibly execute arbitrary code.
    (CVE-2017-1000111)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      linux-image-4.4.0-1026-gke      4.4.0-1026.26
      linux-image-4.4.0-1030-aws      4.4.0-1030.39
      linux-image-4.4.0-1069-raspi2   4.4.0-1069.77
      linux-image-4.4.0-1071-snapdragon  4.4.0-1071.76
      linux-image-4.4.0-91-generic    4.4.0-91.114
      linux-image-4.4.0-91-generic-lpae  4.4.0-91.114
      linux-image-4.4.0-91-lowlatency  4.4.0-91.114
      linux-image-4.4.0-91-powerpc-e500mc  4.4.0-91.114
      linux-image-4.4.0-91-powerpc-smp  4.4.0-91.114
      linux-image-4.4.0-91-powerpc64-emb  4.4.0-91.114
      linux-image-4.4.0-91-powerpc64-smp  4.4.0-91.114
      linux-image-aws                 4.4.0.1030.32
      linux-image-generic             4.4.0.91.96
      linux-image-generic-lpae        4.4.0.91.96
      linux-image-gke                 4.4.0.1026.27
      linux-image-lowlatency          4.4.0.91.96
      linux-image-powerpc-e500mc      4.4.0.91.96
      linux-image-powerpc-smp         4.4.0.91.96
      linux-image-powerpc64-emb       4.4.0.91.96
      linux-image-powerpc64-smp       4.4.0.91.96
      linux-image-raspi2              4.4.0.1069.69
      linux-image-snapdragon          4.4.0.1071.63
    
    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-3385-1
      CVE-2017-1000111, CVE-2017-1000112
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.4.0-91.114
      https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1030.39
      https://launchpad.net/ubuntu/+source/linux-gke/4.4.0-1026.26
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1069.77
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1071.76
    
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