Ubuntu 4225-2: Linux kernel (HWE) vulnerabilities

    Date17 Jan 2020
    337
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-4225-2
    January 18, 2020
    
    linux-hwe vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 18.04 LTS
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux-hwe: Linux hardware enablement (HWE) kernel
    
    Details:
    
    USN-4225-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.10.
    This update provides the corresponding updates for the Linux Hardware
    Enablement (HWE) kernel from Ubuntu 19.10 for Ubuntu 18.04 LTS.
    
    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)
    
    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 the Intel WiMAX 2400 driver in the Linux kernel did
    not properly deallocate memory in certain situations. A local attacker
    could use this to cause a denial of service (kernel memory exhaustion).
    (CVE-2019-19051)
    
    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 netlink-based 802.11 configuration interface in
    the Linux kernel did not deallocate memory in certain error conditions. A
    local attacker could possibly use this to cause a denial of service (kernel
    memory exhaustion). (CVE-2019-19055)
    
    It was discovered that the event tracing subsystem of the Linux kernel did
    not properly deallocate memory in certain error conditions. A local
    attacker could use this to cause a denial of service (kernel memory
    exhaustion). (CVE-2019-19072)
    
    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)
    
    It was discovered that the DesignWare USB3 controller driver in the Linux
    kernel did not properly deallocate memory in some error conditions. A local
    attacker could possibly use this to cause a denial of service (memory
    exhaustion). (CVE-2019-18813)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 18.04 LTS:
      linux-image-5.3.0-26-generic    5.3.0-26.28~18.04.1
      linux-image-5.3.0-26-generic-lpae  5.3.0-26.28~18.04.1
      linux-image-5.3.0-26-lowlatency  5.3.0-26.28~18.04.1
      linux-image-generic-hwe-18.04   5.3.0.26.95
      linux-image-generic-lpae-hwe-18.04  5.3.0.26.95
      linux-image-lowlatency-hwe-18.04  5.3.0.26.95
      linux-image-snapdragon-hwe-18.04  5.3.0.26.95
      linux-image-virtual-hwe-18.04   5.3.0.26.95
    
    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/4225-2
      https://usn.ubuntu.com/4225-1
      CVE-2019-14895, CVE-2019-14896, CVE-2019-14897, CVE-2019-14901,
      CVE-2019-16231, CVE-2019-18660, CVE-2019-18813, CVE-2019-19045,
      CVE-2019-19051, CVE-2019-19052, CVE-2019-19055, CVE-2019-19072,
      CVE-2019-19524, CVE-2019-19529, CVE-2019-19534
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-hwe/5.3.0-26.28~18.04.1
    
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