Ubuntu 2662-1: Linux kernel (Trusty HWE) vulnerabilities

    Date07 Jul 2015
    CategoryUbuntu
    36
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-2662-1
    July 07, 2015
    
    linux-lts-trusty vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.04 LTS
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux-lts-trusty: Linux hardware enablement kernel from Trusty
    
    Details:
    
    Alexandre Oliva reported a race condition flaw in the btrfs file system's
    handling of extended attributes (xattrs). A local attacker could exploit
    this flaw to bypass ACLs and potentially escalate privileges.
    (CVE-2014-9710)
    
    A race condition was discovered in the Linux kernel's file_handle size
    verification. A local user could exploit this flaw to read potentially
    sensative memory locations. (CVE-2015-1420)
    
    A underflow error was discovered in the Linux kernel's Ozmo Devices USB
    over WiFi host controller driver. A remote attacker could exploit this flaw
    to cause a denial of service (system crash) or potentially execute
    arbitrary code via a specially crafted packet. (CVE-2015-4001)
    
    A bounds check error was discovered in the Linux kernel's Ozmo Devices USB
    over WiFi host controller driver. A remote attacker could exploit this flaw
    to cause a denial of service (system crash) or potentially execute
    arbitrary code via a specially crafted packet. (CVE-2015-4002)
    
    A division by zero error was discovered in the Linux kernel's Ozmo Devices
    USB over WiFi host controller driver. A remote attacker could exploit this
    flaw to cause a denial of service (system crash). (CVE-2015-4003)
    
    Carl H Lunde discovered missing sanity checks in the the Linux kernel's UDF
    file system (CONFIG_UDF_FS). A local attacker could exploit this flaw to
    cause a denial of service (system crash) by using a corrupted file system
    image. (CVE-2015-4167)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      linux-image-3.13.0-57-generic   3.13.0-57.95~precise1
      linux-image-3.13.0-57-generic-lpae  3.13.0-57.95~precise1
    
    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. If
    you use linux-restricted-modules, you have to update that package as
    well to get modules which work with the new kernel version. Unless you
    manually uninstalled the standard kernel metapackages (e.g. linux-generic,
    linux-server, linux-powerpc), a standard system upgrade will automatically
    perform this as well.
    
    References:
      http://www.ubuntu.com/usn/usn-2662-1
      CVE-2014-9710, CVE-2015-1420, CVE-2015-4001, CVE-2015-4002,
      CVE-2015-4003, CVE-2015-4167
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-57.95~precise1
    
    
    
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