Ubuntu 4145-1: Linux kernel vulnerabilities

    Date30 Sep 2019
    CategoryUbuntu
    949
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4145-1
    October 01, 2019
    
    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 race condition existed in the GFS2 file system in
    the Linux kernel. A local attacker could possibly use this to cause a
    denial of service (system crash). (CVE-2016-10905)
    
    It was discovered that the IPv6 implementation in the Linux kernel did not
    properly validate socket options in some situations. A local attacker could
    use this to cause a denial of service (system crash) or possibly execute
    arbitrary code. (CVE-2017-18509)
    
    It was discovered that the USB gadget Midi driver in the Linux kernel
    contained a double-free vulnerability when handling certain error
    conditions. A local attacker could use this to cause a denial of service
    (system crash). (CVE-2018-20961)
    
    It was discovered that the XFS file system in the Linux kernel did not
    properly handle mount failures in some situations. A local attacker could
    possibly use this to cause a denial of service (system crash) or execute
    arbitrary code. (CVE-2018-20976)
    
    It was discovered that the Intel Wi-Fi device driver in the Linux kernel
    did not properly validate certain Tunneled Direct Link Setup (TDLS). A
    physically proximate attacker could use this to cause a denial of service
    (Wi-Fi disconnect). (CVE-2019-0136)
    
    It was discovered that the Bluetooth UART implementation in the Linux
    kernel did not properly check for missing tty operations. A local attacker
    could use this to cause a denial of service. (CVE-2019-10207)
    
    It was discovered that an integer overflow existed in the Linux kernel when
    reference counting pages, leading to potential use-after-free issues. A
    local attacker could use this to cause a denial of service (system crash)
    or possibly execute arbitrary code. (CVE-2019-11487)
    
    It was discovered that the GTCO tablet input driver in the Linux kernel did
    not properly bounds check the initial HID report sent by the device. A
    physically proximate attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2019-13631)
    
    It was discovered that the Raremono AM/FM/SW radio device driver in the
    Linux kernel did not properly allocate memory, leading to a use-after-free.
    A physically proximate attacker could use this to cause a denial of service
    or possibly execute arbitrary code. (CVE-2019-15211)
    
    It was discovered that a race condition existed in the CPiA2 video4linux
    device driver for the Linux kernel, leading to a use-after-free. A
    physically proximate attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2019-15215)
    
    It was discovered that the Atheros mobile chipset driver in the Linux
    kernel did not properly validate data in some situations. An attacker could
    use this to cause a denial of service (system crash). (CVE-2019-15926)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.04 LTS:
      linux-image-4.4.0-1059-kvm      4.4.0-1059.66
      linux-image-4.4.0-1095-aws      4.4.0-1095.106
      linux-image-4.4.0-1123-raspi2   4.4.0-1123.132
      linux-image-4.4.0-1127-snapdragon  4.4.0-1127.135
      linux-image-4.4.0-165-generic   4.4.0-165.193
      linux-image-4.4.0-165-generic-lpae  4.4.0-165.193
      linux-image-4.4.0-165-lowlatency  4.4.0-165.193
      linux-image-4.4.0-165-powerpc-e500mc  4.4.0-165.193
      linux-image-4.4.0-165-powerpc-smp  4.4.0-165.193
      linux-image-4.4.0-165-powerpc64-emb  4.4.0-165.193
      linux-image-4.4.0-165-powerpc64-smp  4.4.0-165.193
      linux-image-aws                 4.4.0.1095.99
      linux-image-generic             4.4.0.165.173
      linux-image-generic-lpae        4.4.0.165.173
      linux-image-kvm                 4.4.0.1059.59
      linux-image-lowlatency          4.4.0.165.173
      linux-image-powerpc-e500mc      4.4.0.165.173
      linux-image-powerpc-smp         4.4.0.165.173
      linux-image-powerpc64-emb       4.4.0.165.173
      linux-image-powerpc64-smp       4.4.0.165.173
      linux-image-raspi2              4.4.0.1123.123
      linux-image-snapdragon          4.4.0.1127.119
      linux-image-virtual             4.4.0.165.173
    
    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/4145-1
      CVE-2016-10905, CVE-2017-18509, CVE-2018-20961, CVE-2018-20976,
      CVE-2019-0136, CVE-2019-10207, CVE-2019-11487, CVE-2019-13631,
      CVE-2019-15211, CVE-2019-15215, CVE-2019-15926
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.4.0-165.193
      https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1095.106
      https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1059.66
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1123.132
      https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1127.135
    
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