Ubuntu 2930-3: Linux kernel (Raspberry Pi 2) vulnerabilities

    Date16 Mar 2016
    CategoryUbuntu
    43
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-2930-3
    March 16, 2016
    
    linux-raspi2 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 15.10
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    
    Details:
    
    Ben Hawkes discovered that the Linux netfilter implementation did not
    correctly perform validation when handling IPT_SO_SET_REPLACE events. A
    local unprivileged attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code with administrative
    privileges. (CVE-2016-3134)
    
    Ben Hawkes discovered an integer overflow in the Linux netfilter
    implementation. On systems running 32 bit kernels, a local unprivileged
    attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code with administrative privileges.
    (CVE-2016-3135)
    
    Ralf Spenneberg discovered that the USB driver for Clie devices in the
    Linux kernel did not properly sanity check the endpoints reported by the
    device. An attacker with physical access could cause a denial of service
    (system crash). (CVE-2015-7566)
    
    It was discovered that a race condition existed when handling heartbeat-
    timeout events in the SCTP implementation of the Linux kernel. A remote
    attacker could use this to cause a denial of service. (CVE-2015-8767)
    
    It was discovered that a race condition existed in the ioctl handler for
    the TTY driver in the Linux kernel. A local attacker could use this to
    cause a denial of service (system crash) or expose sensitive information.
    (CVE-2016-0723)
    
    Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectly
    performed a double-free. A local attacker with physical access could use
    this to cause a denial of service (system crash) or possibly execute
    arbitrary code with administrative privileges. (CVE-2016-2384)
    
    Ralf Spenneberg discovered that the USB driver for Treo devices in the
    Linux kernel did not properly sanity check the endpoints reported by the
    device. An attacker with physical access could cause a denial of service
    (system crash). (CVE-2016-2782)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 15.10:
      linux-image-4.2.0-1027-raspi2   4.2.0-1027.35
    
    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:
      http://www.ubuntu.com/usn/usn-2930-3
      http://www.ubuntu.com/usn/usn-2930-1
      CVE-2015-7566, CVE-2015-8767, CVE-2016-0723, CVE-2016-2384,
      CVE-2016-2782, CVE-2016-3134, CVE-2016-3135
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.2.0-1027.35
    
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