Ubuntu 3656-1: Linux kernel (Raspberry Pi 2, Snapdragon) vulnerabilities

    Date22 May 2018
    CategoryUbuntu
    5481
    Posted ByAnthony Pell
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3656-1
    May 22, 2018
    
    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-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    
    Details:
    
    Tuba Yavuz discovered that a double-free error existed in the USBTV007
    driver of the Linux kernel. A local attacker could use this to cause a
    denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2017-17975)
    
    It was discovered that a race condition existed in the F2FS implementation
    in the Linux kernel. A local attacker could use this to cause a denial of
    service (system crash). (CVE-2017-18193)
    
    It was discovered that a buffer overflow existed in the Hisilicon HNS
    Ethernet Device driver in the Linux kernel. A local attacker could use this
    to cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2017-18222)
    
    It was discovered that the netfilter subsystem in the Linux kernel did not
    validate that rules containing jumps contained user-defined chains. A local
    attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code. (CVE-2018-1065)
    
    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 vulnerability existed in
    the DCCP protocol implementation in the Linux kernel. A local attacker
    could use this to cause a denial of service (system crash). (CVE-2018-1130)
    
    It was discovered that the SCTP Protocol implementation in the Linux kernel
    did not properly validate userspace provided payload lengths in some
    situations. A local attacker could use this to cause a denial of service
    (system crash). (CVE-2018-5803)
    
    It was discovered that a double free error existed in the block layer
    subsystem of the Linux kernel when setting up a request queue. A local
    attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code. (CVE-2018-7480)
    
    It was discovered that a memory leak existed in the SAS driver subsystem of
    the Linux kernel. A local attacker could use this to cause a denial of
    service (memory exhaustion). (CVE-2018-7757)
    
    It was discovered that a race condition existed in the x86 machine check
    handler in the Linux kernel. A local privileged attacker could use this to
    cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2018-7995)
    
    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)
    
    Silvio Cesare discovered a buffer overwrite existed in the NCPFS
    implementation in the Linux kernel. A remote attacker controlling a
    malicious NCPFS server could use this to cause a denial of service (system
    crash) or possibly execute arbitrary code. (CVE-2018-8822)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      linux-image-4.4.0-1090-raspi2   4.4.0-1090.98
      linux-image-4.4.0-1093-snapdragon  4.4.0-1093.98
      linux-image-raspi2              4.4.0.1090.90
      linux-image-snapdragon          4.4.0.1093.85
    
    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-3656-1
      CVE-2017-17975, CVE-2017-18193, CVE-2017-18222, CVE-2018-1065,
      CVE-2018-1068, CVE-2018-1130, CVE-2018-5803, CVE-2018-7480,
      CVE-2018-7757, CVE-2018-7995, CVE-2018-8781, CVE-2018-8822
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1090.98
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1093.98
    
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