Ubuntu 2613-1: Linux kernel (Trusty HWE) vulnerabilities

    Date20 May 2015
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    Ubuntu Security Notice USN-2613-1
    May 20, 2015
    linux-lts-trusty vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 12.04 LTS
    Several security issues were fixed in the kernel.
    Software Description:
    - linux-lts-trusty: Linux hardware enablement kernel from Trusty
    Vincent Tondellier discovered an integer overflow in the Linux kernel's
    netfilter connection tracking accounting of loaded extensions. An attacker
    on the local area network (LAN) could potential exploit this flaw to cause
    a denial of service (system crash of targeted system). (CVE-2014-9715)
    Jan Beulich discovered the Xen virtual machine subsystem of the Linux
    kernel did not properly restrict access to PCI command registers. A local
    guest user could exploit this flaw to cause a denial of service (host
    crash). (CVE-2015-2150)
    A privilege escalation was discovered in the fork syscal vi the int80 entry
    on 64 bit kernels with 32 bit emulation support. An unprivileged local
    attacker could exploit this flaw to increase their privileges on the
    system. (CVE-2015-2830)
    A memory corruption issue was discovered in AES decryption when using the
    Intel AES-NI accelerated code path. A remote attacker could exploit this
    flaw to cause a denial of service (system crash) or potentially escalate
    privileges on Intel base machines with AEC-GCM mode IPSec security
    association. (CVE-2015-3331)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 12.04 LTS:
      linux-image-3.13.0-53-generic   3.13.0-53.87~precise1
      linux-image-3.13.0-53-generic-lpae  3.13.0-53.87~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.
      CVE-2014-9715, CVE-2015-2150, CVE-2015-2830, CVE-2015-3331
    Package Information:

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