Ubuntu 4157-1: Linux kernel vulnerabilities

    Date16 Oct 2019
    CategoryUbuntu
    346
    Posted ByLinuxSecurity Advisories
    Ubuntu Large
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4157-1
    October 17, 2019
    
    linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 19.04
    
    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-azure: Linux kernel for Microsoft Azure Cloud systems
    - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
    - linux-kvm: Linux kernel for cloud environments
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    
    Details:
    
    Wen Huang discovered that the Marvell Wi-Fi device driver in the Linux
    kernel did not properly perform bounds checking, leading to a heap
    overflow. A local attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2019-14814,
    CVE-2019-14815, CVE-2019-14816)
    
    Matt Delco discovered that the KVM hypervisor implementation in the Linux
    kernel did not properly perform bounds checking when handling coalesced
    MMIO write operations. A local attacker with write access to /dev/kvm could
    use this to cause a denial of service (system crash). (CVE-2019-14821)
    
    Hui Peng and Mathias Payer discovered that the 91x Wi-Fi driver in the
    Linux kernel did not properly handle error conditions on initialization,
    leading to a double-free vulnerability. A physically proximate attacker
    could use this to cause a denial of service (system crash).
    (CVE-2019-15504)
    
    It was discovered that the Technisat DVB-S/S2 USB device driver in the
    Linux kernel contained a buffer overread. A physically proximate attacker
    could use this to cause a denial of service (system crash) or possibly
    expose sensitive information. (CVE-2019-15505)
    
    Brad Spengler discovered that a Spectre mitigation was improperly
    implemented in the ptrace susbsystem of the Linux kernel. A local attacker
    could possibly use this to expose sensitive information. (CVE-2019-15902)
    
    It was discovered that the IPv6 RDS implementation in the Linux kernel did
    not properly initialize fields in a data structure returned to user space.
    A local attacker could use this to expose sensitive information (kernel
    memory). Please note that the RDS protocol is blacklisted in Ubuntu by
    default. (CVE-2019-16714)
    
    It was discovered that an integer overflow existed in the Binder
    implementation of the Linux kernel, leading to a buffer overflow. A local
    attacker could use this to escalate privileges. (CVE-2019-2181)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      linux-image-5.0.0-1019-aws      5.0.0-1019.21
      linux-image-5.0.0-1020-kvm      5.0.0-1020.21
      linux-image-5.0.0-1020-raspi2   5.0.0-1020.20
      linux-image-5.0.0-1021-gcp      5.0.0-1021.21
      linux-image-5.0.0-1023-azure    5.0.0-1023.24
      linux-image-5.0.0-1024-snapdragon  5.0.0-1024.25
      linux-image-5.0.0-32-generic    5.0.0-32.34
      linux-image-5.0.0-32-generic-lpae  5.0.0-32.34
      linux-image-5.0.0-32-lowlatency  5.0.0-32.34
      linux-image-aws                 5.0.0.1019.20
      linux-image-azure               5.0.0.1023.22
      linux-image-gcp                 5.0.0.1021.47
      linux-image-generic             5.0.0.32.33
      linux-image-generic-lpae        5.0.0.32.33
      linux-image-gke                 5.0.0.1021.47
      linux-image-kvm                 5.0.0.1020.20
      linux-image-lowlatency          5.0.0.32.33
      linux-image-raspi2              5.0.0.1020.17
      linux-image-snapdragon          5.0.0.1024.17
      linux-image-virtual             5.0.0.32.33
    
    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/4157-1
      CVE-2019-14814, CVE-2019-14815, CVE-2019-14816, CVE-2019-14821,
      CVE-2019-15504, CVE-2019-15505, CVE-2019-15902, CVE-2019-16714,
      CVE-2019-2181
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/5.0.0-32.34
      https://launchpad.net/ubuntu/+source/linux-aws/5.0.0-1019.21
      https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1023.24
      https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1021.21
      https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1020.21
      https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1020.20
      https://launchpad.net/ubuntu/+source/linux-snapdragon/5.0.0-1024.25
    
    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":"39","type":"x","order":"1","pct":50.65,"resources":[]},{"id":"88","title":"Should be more technical","votes":"11","type":"x","order":"2","pct":14.29,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"27","type":"x","order":"3","pct":35.06,"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.