Linux Security
    Linux Security
    Linux Security

    Ubuntu 4227-1: Linux kernel vulnerabilities

    Date 06 Jan 2020
    562
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4227-1
    January 07, 2020
    
    linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15,
    linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2,
    linux-snapdragon vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    - 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-4.15: Linux kernel for Google Container Engine (GKE) systems
    - linux-kvm: Linux kernel for cloud environments
    - linux-oem: Linux kernel for OEM processors
    - linux-oracle: Linux kernel for Oracle Cloud systems
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    - linux-snapdragon: Linux kernel for Snapdragon processors
    - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
    - linux-azure: Linux kernel for Microsoft Azure Cloud systems
    - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
    - linux-hwe: Linux hardware enablement (HWE) kernel
    
    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)
    
    It was discovered that the Fujitsu ES network device driver for the Linux
    kernel did not properly check for errors in some situations, leading to a
    NULL pointer dereference. A local attacker could use this to cause a denial
    of service. (CVE-2019-16231)
    
    It was discovered that the QLogic Fibre Channel driver in the Linux kernel
    did not properly check for error, leading to a NULL pointer dereference. A
    local attacker could possibly use this to cause a denial of service (system
    crash). (CVE-2019-16233)
    
    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 the Mellanox Technologies Innova driver in the Linux
    kernel did not properly deallocate memory in certain failure conditions. A
    local attacker could use this to cause a denial of service (kernel memory
    exhaustion). (CVE-2019-19045)
    
    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 AMD Display Engine Driver in the Linux kernel
    did not properly deallocate memory in certain error conditions. A local
    attack could use this to cause a denial of service (memory exhaustion).
    (CVE-2019-19083)
    
    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 Microchip CAN BUS Analyzer driver in the Linux
    kernel contained a use-after-free vulnerability on device disconnect. A
    physically proximate attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2019-19529)
    
    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)
    
    Tristan Madani discovered that the ALSA timer implementation in the Linux
    kernel contained a use-after-free vulnerability. A local attacker could use
    this to cause a denial of service (system crash) or possibly execute
    arbitrary code. (CVE-2019-19807)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      linux-image-4.15.0-1031-oracle  4.15.0-1031.34
      linux-image-4.15.0-1050-gke     4.15.0-1050.53
      linux-image-4.15.0-1052-kvm     4.15.0-1052.52
      linux-image-4.15.0-1053-raspi2  4.15.0-1053.57
      linux-image-4.15.0-1057-aws     4.15.0-1057.59
      linux-image-4.15.0-1066-oem     4.15.0-1066.76
      linux-image-4.15.0-1070-snapdragon  4.15.0-1070.77
      linux-image-4.15.0-74-generic   4.15.0-74.84
      linux-image-4.15.0-74-generic-lpae  4.15.0-74.84
      linux-image-4.15.0-74-lowlatency  4.15.0-74.84
      linux-image-aws                 4.15.0.1057.58
      linux-image-aws-lts-18.04       4.15.0.1057.58
      linux-image-generic             4.15.0.74.76
      linux-image-generic-lpae        4.15.0.74.76
      linux-image-gke                 4.15.0.1050.53
      linux-image-gke-4.15            4.15.0.1050.53
      linux-image-kvm                 4.15.0.1052.52
      linux-image-lowlatency          4.15.0.74.76
      linux-image-oem                 4.15.0.1066.70
      linux-image-oracle              4.15.0.1031.36
      linux-image-oracle-lts-18.04    4.15.0.1031.36
      linux-image-powerpc-e500mc      4.15.0.74.76
      linux-image-powerpc-smp         4.15.0.74.76
      linux-image-powerpc64-emb       4.15.0.74.76
      linux-image-powerpc64-smp       4.15.0.74.76
      linux-image-raspi2              4.15.0.1053.51
      linux-image-snapdragon          4.15.0.1070.73
      linux-image-virtual             4.15.0.74.76
    
    Ubuntu 16.04 LTS:
      linux-image-4.15.0-1031-oracle  4.15.0-1031.34~16.04.1
      linux-image-4.15.0-1052-gcp     4.15.0-1052.56
      linux-image-4.15.0-1057-aws     4.15.0-1057.59~16.04.1
      linux-image-4.15.0-1066-azure   4.15.0-1066.71
      linux-image-4.15.0-74-generic   4.15.0-74.83~16.04.1
      linux-image-4.15.0-74-generic-lpae  4.15.0-74.83~16.04.1
      linux-image-4.15.0-74-lowlatency  4.15.0-74.83~16.04.1
      linux-image-aws-hwe             4.15.0.1057.57
      linux-image-azure               4.15.0.1066.69
      linux-image-azure-edge          4.15.0.1066.69
      linux-image-gcp                 4.15.0.1052.66
      linux-image-generic-hwe-16.04   4.15.0.74.94
      linux-image-generic-lpae-hwe-16.04  4.15.0.74.94
      linux-image-gke                 4.15.0.1052.66
      linux-image-lowlatency-hwe-16.04  4.15.0.74.94
      linux-image-oem                 4.15.0.74.94
      linux-image-oracle              4.15.0.1031.24
      linux-image-virtual-hwe-16.04   4.15.0.74.94
    
    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/4227-1
      CVE-2019-14895, CVE-2019-14896, CVE-2019-14897, CVE-2019-14901,
      CVE-2019-16231, CVE-2019-16233, CVE-2019-18660, CVE-2019-19045,
      CVE-2019-19052, CVE-2019-19083, CVE-2019-19524, CVE-2019-19529,
      CVE-2019-19534, CVE-2019-19807
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.15.0-74.84
      https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1057.59
      https://launchpad.net/ubuntu/+source/linux-gke-4.15/4.15.0-1050.53
      https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1052.52
      https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1066.76
      https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1031.34
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1053.57
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1070.77
      https://launchpad.net/ubuntu/+source/linux-aws-hwe/4.15.0-1057.59~16.04.1
      https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1066.71
      https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1052.56
      https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-74.83~16.04.1
      https://launchpad.net/ubuntu/+source/linux-oracle/4.15.0-1031.34~16.04.1
    

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