Ubuntu 3619-2: Linux kernel (Xenial HWE) vulnerabilities

    Date05 Apr 2018
    CategoryUbuntu
    7229
    Posted ByAnthony Pell
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3619-2
    April 05, 2018
    
    linux-lts-xenial, linux-aws vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux-aws: Linux kernel for Amazon Web Services (AWS) systems
    - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
    
    Details:
    
    USN-3619-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
    LTS. This update provides the corresponding updates for the Linux
    Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
    14.04 LTS.
    
    Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation
    in the Linux kernel improperly performed sign extension in some situations.
    A local attacker could use this to cause a denial of service (system crash)
    or possibly execute arbitrary code. (CVE-2017-16995)
    
    It was discovered that a race condition leading to a use-after-free
    vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A
    local attacker could use this to cause a denial of service (system crash)
    or possibly execute arbitrary code. (CVE-2017-0861)
    
    It was discovered that the KVM implementation in the Linux kernel allowed
    passthrough of the diagnostic I/O port 0x80. An attacker in a guest VM
    could use this to cause a denial of service (system crash) in the host OS.
    (CVE-2017-1000407)
    
    It was discovered that an information disclosure vulnerability existed in
    the ACPI implementation of the Linux kernel. A local attacker could use
    this to expose sensitive information (kernel memory addresses).
    (CVE-2017-11472)
    
    It was discovered that a use-after-free vulnerability existed in the
    network namespaces implementation in the Linux kernel. A local attacker
    could use this to cause a denial of service (system crash) or possibly
    execute arbitrary code. (CVE-2017-15129)
    
    It was discovered that the Advanced Linux Sound Architecture (ALSA)
    subsystem in the Linux kernel contained a use-after-free when handling
    device removal. A physically proximate attacker could use this to cause a
    denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2017-16528)
    
    Andrey Konovalov discovered that the usbtest device driver in the Linux
    kernel did not properly validate endpoint metadata. A physically proximate
    attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16532)
    
    Andrey Konovalov discovered that the Conexant cx231xx USB video capture
    driver in the Linux kernel did not properly validate interface descriptors.
    A physically proximate attacker could use this to cause a denial of service
    (system crash). (CVE-2017-16536)
    
    Andrey Konovalov discovered that the SoundGraph iMON USB driver in the
    Linux kernel did not properly validate device metadata. A physically
    proximate attacker could use this to cause a denial of service (system
    crash). (CVE-2017-16537)
    
    Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver
    in the Linux kernel did not properly validate device descriptors. A
    physically proximate attacker could use this to cause a denial of service
    (system crash). (CVE-2017-16645)
    
    Andrey Konovalov discovered that the DiBcom DiB0700 USB DVB driver in the
    Linux kernel did not properly handle detach events. A physically proximate
    attacker could use this to cause a denial of service (system crash).
    (CVE-2017-16646)
    
    Andrey Konovalov discovered that the CDC USB Ethernet driver did not
    properly validate device descriptors. A physically proximate attacker could
    use this to cause a denial of service (system crash). (CVE-2017-16649)
    
    Andrey Konovalov discovered that the QMI WWAN USB driver did not properly
    validate device descriptors. A physically proximate attacker could use this
    to cause a denial of service (system crash). (CVE-2017-16650)
    
    It was discovered that the USB Virtual Host Controller Interface (VHCI)
    driver in the Linux kernel contained an information disclosure
    vulnerability. A physically proximate attacker could use this to expose
    sensitive information (kernel memory). (CVE-2017-16911)
    
    It was discovered that the USB over IP implementation in the Linux kernel
    did not validate endpoint numbers. A remote attacker could use this to
    cause a denial of service (system crash). (CVE-2017-16912)
    
    It was discovered that the USB over IP implementation in the Linux kernel
    did not properly validate CMD_SUBMIT packets. A remote attacker could use
    this to cause a denial of service (excessive memory consumption).
    (CVE-2017-16913)
    
    It was discovered that the USB over IP implementation in the Linux kernel
    contained a NULL pointer dereference error. A remote attacker could use
    this to cause a denial of service (system crash). (CVE-2017-16914)
    
    It was discovered that the HugeTLB component of the Linux kernel did not
    properly handle holes in hugetlb ranges. A local attacker could use this to
    expose sensitive information (kernel memory). (CVE-2017-16994)
    
    It was discovered that the netfilter component of the Linux did not
    properly restrict access to the connection tracking helpers list. A local
    attacker could use this to bypass intended access restrictions.
    (CVE-2017-17448)
    
    It was discovered that the netlink subsystem in the Linux kernel did not
    properly restrict observations of netlink messages to the appropriate net
    namespace. A local attacker could use this to expose sensitive information
    (kernel netlink traffic). (CVE-2017-17449)
    
    It was discovered that the netfilter passive OS fingerprinting (xt_osf)
    module did not properly perform access control checks. A local attacker
    could improperly modify the system-wide OS fingerprint list.
    (CVE-2017-17450)
    
    It was discovered that the core USB subsystem in the Linux kernel did not
    validate the number of configurations and interfaces in a device. A
    physically proximate attacker could use this to cause a denial of service
    (system crash). (CVE-2017-17558)
    
    Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
    contained an out-of-bounds read when handling memory-mapped I/O. A local
    attacker could use this to expose sensitive information. (CVE-2017-17741)
    
    It was discovered that the Salsa20 encryption algorithm implementations in
    the Linux kernel did not properly handle zero-length inputs. A local
    attacker could use this to cause a denial of service (system crash).
    (CVE-2017-17805)
    
    It was discovered that the HMAC implementation did not validate the state
    of the underlying cryptographic hash algorithm. A local attacker could use
    this to cause a denial of service (system crash) or possibly execute
    arbitrary code. (CVE-2017-17806)
    
    It was discovered that the keyring implementation in the Linux kernel did
    not properly check permissions when a key request was performed on a task's
    default keyring. A local attacker could use this to add keys to
    unauthorized keyrings. (CVE-2017-17807)
    
    Alexei Starovoitov discovered that the Berkeley Packet Filter (BPF)
    implementation in the Linux kernel contained a branch-pruning logic issue
    around unreachable code. A local attacker could use this to cause a denial
    of service. (CVE-2017-17862)
    
    It was discovered that the parallel cryptography component of the Linux
    kernel incorrectly freed kernel memory. A local attacker could use this to
    cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2017-18075)
    
    It was discovered that a race condition existed in the Device Mapper
    component of the Linux kernel. A local attacker could use this to cause a
    denial of service (system crash). (CVE-2017-18203)
    
    It was discovered that a race condition existed in the OCFS2 file system
    implementation in the Linux kernel. A local attacker could use this to
    cause a denial of service (kernel deadlock). (CVE-2017-18204)
    
    It was discovered that an infinite loop could occur in the the madvise(2)
    implementation in the Linux kernel in certain circumstances. A local
    attacker could use this to cause a denial of service (system hang).
    (CVE-2017-18208)
    
    Andy Lutomirski discovered that the KVM implementation in the Linux kernel
    was vulnerable to a debug exception error when single-stepping through a
    syscall. A local attacker in a non-Linux guest vm could possibly use this
    to gain administrative privileges in the guest vm. (CVE-2017-7518)
    
    It was discovered that the Broadcom NetXtremeII ethernet driver in the
    Linux kernel did not properly validate Generic Segment Offload (GSO) packet
    sizes. An attacker could use this to cause a denial of service (interface
    unavailability). (CVE-2018-1000026)
    
    It was discovered that the Reliable Datagram Socket (RDS) implementation in
    the Linux kernel contained an out-of-bounds write during RDMA page
    allocation. An attacker could use this to cause a denial of service (system
    crash) or possibly execute arbitrary code. (CVE-2018-5332)
    
    Mohamed Ghannam discovered a null pointer dereference in the RDS (Reliable
    Datagram Sockets) protocol implementation of the Linux kernel. A local
    attacker could use this to cause a denial of service (system crash).
    (CVE-2018-5333)
    
    ??? discovered that a race condition existed in loop block device
    implementation in the Linux kernel. A local attacker could use this to
    cause a denial of service (system crash) or possibly execute arbitrary
    code. (CVE-2018-5344)
    
    It was discovered that an integer overflow error existed in the futex
    implementation in the Linux kernel. A local attacker could use this to
    cause a denial of service (system crash). (CVE-2018-6927)
    
    It was discovered that a NULL pointer dereference existed in the RDS
    (Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
    local attacker could use this to cause a denial of service (system crash).
    (CVE-2018-7492)
    
    It was discovered that the Broadcom UniMAC MDIO bus controller driver in
    the Linux kernel did not properly validate device resources. A local
    attacker could use this to cause a denial of service (system crash).
    (CVE-2018-8043)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      linux-image-4.4.0-1016-aws      4.4.0-1016.16
      linux-image-4.4.0-119-generic   4.4.0-119.143~14.04.1
      linux-image-4.4.0-119-generic-lpae  4.4.0-119.143~14.04.1
      linux-image-4.4.0-119-lowlatency  4.4.0-119.143~14.04.1
      linux-image-4.4.0-119-powerpc-e500mc  4.4.0-119.143~14.04.1
      linux-image-4.4.0-119-powerpc-smp  4.4.0-119.143~14.04.1
      linux-image-4.4.0-119-powerpc64-emb  4.4.0-119.143~14.04.1
      linux-image-4.4.0-119-powerpc64-smp  4.4.0-119.143~14.04.1
      linux-image-aws                 4.4.0.1016.16
      linux-image-generic-lpae-lts-xenial  4.4.0.119.100
      linux-image-generic-lts-xenial  4.4.0.119.100
      linux-image-lowlatency-lts-xenial  4.4.0.119.100
      linux-image-powerpc-e500mc-lts-xenial  4.4.0.119.100
      linux-image-powerpc-smp-lts-xenial  4.4.0.119.100
      linux-image-powerpc64-emb-lts-xenial  4.4.0.119.100
      linux-image-powerpc64-smp-lts-xenial  4.4.0.119.100
    
    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/usn/usn-3619-2
      https://usn.ubuntu.com/usn/usn-3619-1
      CVE-2017-0861, CVE-2017-1000407, CVE-2017-11472, CVE-2017-15129,
      CVE-2017-16528, CVE-2017-16532, CVE-2017-16536, CVE-2017-16537,
      CVE-2017-16645, CVE-2017-16646, CVE-2017-16649, CVE-2017-16650,
      CVE-2017-16911, CVE-2017-16912, CVE-2017-16913, CVE-2017-16914,
      CVE-2017-16994, CVE-2017-16995, CVE-2017-17448, CVE-2017-17449,
      CVE-2017-17450, CVE-2017-17558, CVE-2017-17741, CVE-2017-17805,
      CVE-2017-17806, CVE-2017-17807, CVE-2017-17862, CVE-2017-18075,
      CVE-2017-18203, CVE-2017-18204, CVE-2017-18208, CVE-2017-7518,
      CVE-2018-1000026, CVE-2018-5332, CVE-2018-5333, CVE-2018-5344,
      CVE-2018-6927, CVE-2018-7492, CVE-2018-8043
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1016.16
      https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-119.143~14.04.1
    
    
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