Ubuntu 4117-1: Linux kernel (AWS) vulnerabilities

    Date02 Sep 2019
    CategoryUbuntu
    2420
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4117-1
    September 02, 2019
    
    linux-aws 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-aws: Linux kernel for Amazon Web Services (AWS) systems
    
    Details:
    
    It was discovered that a heap buffer overflow existed in the Marvell
    Wireless LAN device driver for the Linux kernel. An attacker could use this
    to cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2019-10126)
    
    Amit Klein and Benny Pinkas discovered that the Linux kernel did not
    sufficiently randomize IP ID values generated for connectionless networking
    protocols. A remote attacker could use this to track particular Linux
    devices. (CVE-2019-10638)
    
    It was discovered that a NULL pointer dereference vulnerability existed in
    the Near-field communication (NFC) implementation in the Linux kernel. A
    local attacker could use this to cause a denial of service (system crash).
    (CVE-2019-12984)
    
    Jann Horn discovered a use-after-free vulnerability in the Linux kernel
    when accessing LDT entries in some situations. A local attacker could use
    this to cause a denial of service (system crash) or possibly execute
    arbitrary code. (CVE-2019-13233)
    
    Jann Horn discovered that the ptrace implementation in the Linux kernel did
    not properly record credentials in some situations. A local attacker could
    use this to cause a denial of service (system crash) or possibly gain
    administrative privileges. (CVE-2019-13272)
    
    It was discovered that the floppy driver in the Linux kernel did not
    properly validate meta data, leading to a buffer overread. A local attacker
    could use this to cause a denial of service (system crash).
    (CVE-2019-14283)
    
    It was discovered that the floppy driver in the Linux kernel did not
    properly validate ioctl() calls, leading to a division-by-zero. A local
    attacker could use this to cause a denial of service (system crash).
    (CVE-2019-14284)
    
    It was discovered that the Marvell Wireless LAN device driver in the Linux
    kernel did not properly validate the BSS descriptor. A local attacker could
    possibly use this to cause a denial of service (system crash) or possibly
    execute arbitrary code. (CVE-2019-3846)
    
    Jason Wang discovered that an infinite loop vulnerability existed in the
    virtio net driver in the Linux kernel. A local attacker in a guest VM could
    possibly use this to cause a denial of service in the host system.
    (CVE-2019-3900)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 19.04:
      linux-image-5.0.0-1014-aws      5.0.0-1014.16
      linux-image-aws                 5.0.0.1014.15
    
    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/4117-1
      CVE-2019-10126, CVE-2019-10638, CVE-2019-12984, CVE-2019-13233,
      CVE-2019-13272, CVE-2019-14283, CVE-2019-14284, CVE-2019-3846,
      CVE-2019-3900
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-aws/5.0.0-1014.16
    
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