Ubuntu 4068-1: Linux kernel vulnerabilities

    Date22 Jul 2019
    CategoryUbuntu
    1205
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4068-1
    July 23, 2019
    
    linux, linux-aws, linux-gcp, linux-kvm, linux-oracle, linux-raspi2,
    linux-snapdragon vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems
    - linux-kvm: Linux kernel for cloud environments
    - linux-oracle: Linux kernel for Oracle Cloud systems
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    
    Details:
    
    Adam Zabrocki discovered that the Intel i915 kernel mode graphics driver in
    the Linux kernel did not properly restrict mmap() ranges in some
    situations. A local attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2019-11085)
    
    It was discovered that a race condition leading to a use-after-free existed
    in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux
    kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a
    local attacker could use this to cause a denial of service (system crash)
    or possibly execute arbitrary code. (CVE-2019-11815)
    
    It was discovered that the ext4 file system implementation in the Linux
    kernel did not properly zero out memory in some situations. A local
    attacker could use this to expose sensitive information (kernel memory).
    (CVE-2019-11833)
    
    It was discovered that the Bluetooth Human Interface Device Protocol (HIDP)
    implementation in the Linux kernel did not properly verify strings were
    NULL terminated in certain situations. A local attacker could use this to
    expose sensitive information (kernel memory). (CVE-2019-11884)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      linux-image-4.15.0-1018-oracle  4.15.0-1018.20
      linux-image-4.15.0-1037-gcp     4.15.0-1037.39
      linux-image-4.15.0-1039-kvm     4.15.0-1039.39
      linux-image-4.15.0-1041-raspi2  4.15.0-1041.44
      linux-image-4.15.0-1044-aws     4.15.0-1044.46
      linux-image-4.15.0-1058-snapdragon  4.15.0-1058.64
      linux-image-4.15.0-55-generic   4.15.0-55.60
      linux-image-4.15.0-55-generic-lpae  4.15.0-55.60
      linux-image-4.15.0-55-lowlatency  4.15.0-55.60
      linux-image-aws                 4.15.0.1044.43
      linux-image-gcp                 4.15.0.1037.39
      linux-image-generic             4.15.0.55.57
      linux-image-generic-lpae        4.15.0.55.57
      linux-image-kvm                 4.15.0.1039.39
      linux-image-lowlatency          4.15.0.55.57
      linux-image-oracle              4.15.0.1018.21
      linux-image-powerpc-e500mc      4.15.0.55.57
      linux-image-powerpc-smp         4.15.0.55.57
      linux-image-powerpc64-emb       4.15.0.55.57
      linux-image-powerpc64-smp       4.15.0.55.57
      linux-image-raspi2              4.15.0.1041.39
      linux-image-snapdragon          4.15.0.1058.61
      linux-image-virtual             4.15.0.55.57
    
    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/4068-1
      CVE-2019-11085, CVE-2019-11815, CVE-2019-11833, CVE-2019-11884
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.15.0-55.60
      https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1044.46
      https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1037.39
      https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1039.39
      https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1018.20
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1041.44
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1058.64
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the articles on LinuxSecurity?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/24-what-do-you-think-of-the-quality-of-the-articles-on-linuxsecurity?task=poll.vote&format=json
    24
    radio
    [{"id":"87","title":"Excellent, don't change a thing!","votes":"8","type":"x","order":"1","pct":61.54,"resources":[]},{"id":"88","title":"Should be more technical","votes":"3","type":"x","order":"2","pct":23.08,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"2","type":"x","order":"3","pct":15.38,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.