Ubuntu 3617-3: Linux kernel (Raspberry Pi 2) vulnerabilities

    Date04 Apr 2018
    CategoryUbuntu
    4896
    Posted ByAnthony Pell
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3617-3
    April 04, 2018
    
    linux-raspi2 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.10
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    
    Details:
    
    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 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)
    
    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 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 ASIX Ethernet USB driver in the Linux
    kernel did not properly handle suspend and resume events. A physically
    proximate attacker could use this to cause a denial of service (system
    crash). (CVE-2017-16647)
    
    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 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 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)
    
    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 tasks'
    default keyring. A local attacker could use this to add keys to
    unauthorized keyrings. (CVE-2017-17807)
    
    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 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 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)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.10:
      linux-image-4.13.0-1016-raspi2  4.13.0-1016.17
      linux-image-raspi2              4.13.0.1016.14
    
    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-3617-3
      https://usn.ubuntu.com/usn/usn-3617-1
      CVE-2017-0861, CVE-2017-15129, CVE-2017-16532, CVE-2017-16537,
      CVE-2017-16645, CVE-2017-16646, CVE-2017-16647, CVE-2017-16649,
      CVE-2017-16650, CVE-2017-16994, CVE-2017-17448, CVE-2017-17450,
      CVE-2017-17741, CVE-2017-17805, CVE-2017-17806, CVE-2017-17807,
      CVE-2017-18204, CVE-2018-1000026, CVE-2018-5332, CVE-2018-5333,
      CVE-2018-5344
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1016.17
    
    
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