Ubuntu 4228-1: Linux kernel vulnerabilities

    Date06 Jan 2020
    210
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4228-1
    January 07, 2020
    
    linux, linux-aws, linux-kvm, 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-kvm: Linux kernel for cloud environments
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    
    Details:
    
    It was discovered that a heap-based buffer overflow existed in the Marvell
    WiFi-Ex Driver for the Linux kernel. A physically proximate attacker could
    use this to cause a denial of service (system crash) or possibly execute
    arbitrary code. (CVE-2019-14895, CVE-2019-14901)
    
    It was discovered that a heap-based buffer overflow existed in the Marvell
    Libertas WLAN Driver for the Linux kernel. A physically proximate attacker
    could use this to cause a denial of service (system crash) or possibly
    execute arbitrary code. (CVE-2019-14896, CVE-2019-14897)
    
    Anthony Steinhauser discovered that the Linux kernel did not properly
    perform Spectre_RSB mitigations to all processors for PowerPC architecture
    systems in some situations. A local attacker could use this to expose
    sensitive information. (CVE-2019-18660)
    
    It was discovered that Geschwister Schneider USB CAN interface driver in
    the Linux kernel did not properly deallocate memory in certain failure
    conditions. A physically proximate attacker could use this to cause a
    denial of service (kernel memory exhaustion). (CVE-2019-19052)
    
    It was discovered that the driver for memoryless force-feedback input
    devices in the Linux kernel contained a use-after-free vulnerability. A
    physically proximate attacker could possibly use this to cause a denial of
    service (system crash) or execute arbitrary code. (CVE-2019-19524)
    
    It was discovered that the PEAK-System Technik USB driver in the Linux
    kernel did not properly sanitize memory before sending it to the device. A
    physically proximate attacker could use this to expose sensitive
    information (kernel memory). (CVE-2019-19534)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      linux-image-4.4.0-1064-kvm      4.4.0-1064.71
      linux-image-4.4.0-1100-aws      4.4.0-1100.111
      linux-image-4.4.0-1127-raspi2   4.4.0-1127.136
      linux-image-4.4.0-1131-snapdragon  4.4.0-1131.139
      linux-image-4.4.0-171-generic   4.4.0-171.200
      linux-image-4.4.0-171-generic-lpae  4.4.0-171.200
      linux-image-4.4.0-171-lowlatency  4.4.0-171.200
      linux-image-4.4.0-171-powerpc-e500mc  4.4.0-171.200
      linux-image-4.4.0-171-powerpc-smp  4.4.0-171.200
      linux-image-4.4.0-171-powerpc64-emb  4.4.0-171.200
      linux-image-4.4.0-171-powerpc64-smp  4.4.0-171.200
      linux-image-aws                 4.4.0.1100.104
      linux-image-generic             4.4.0.171.179
      linux-image-generic-lpae        4.4.0.171.179
      linux-image-kvm                 4.4.0.1064.64
      linux-image-lowlatency          4.4.0.171.179
      linux-image-powerpc-e500mc      4.4.0.171.179
      linux-image-powerpc-smp         4.4.0.171.179
      linux-image-powerpc64-emb       4.4.0.171.179
      linux-image-powerpc64-smp       4.4.0.171.179
      linux-image-raspi2              4.4.0.1127.127
      linux-image-snapdragon          4.4.0.1131.123
      linux-image-virtual             4.4.0.171.179
    
    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/4228-1
      CVE-2019-14895, CVE-2019-14896, CVE-2019-14897, CVE-2019-14901,
      CVE-2019-18660, CVE-2019-19052, CVE-2019-19524, CVE-2019-19534
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.4.0-171.200
      https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1100.111
      https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1064.71
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1127.136
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1131.139
    
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