Ubuntu 2239-1: Linux kernel (Saucy HWE) vulnerabilities

    Date05 Jun 2014
    CategoryUbuntu
    24
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-2239-1
    June 05, 2014
    
    linux-lts-saucy 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-saucy: Linux hardware enablement kernel from Saucy
    
    Details:
    
    Pinkie Pie discovered a flaw in the Linux kernel's futex subsystem. An
    unprivileged local user could exploit this flaw to cause a denial of
    service (system crash) or gain administrative privileges. (CVE-2014-3153)
    
    A flaw was discovered in the Linux kernel virtual machine's (kvm)
    validation of interrupt requests (irq). A guest OS user could exploit this
    flaw to cause a denial of service (host OS crash). (CVE-2014-0155)
    
    An information leak was discovered in the netfilter subsystem of the Linux
    kernel. An attacker could exploit this flaw to obtain sensitive information
    from kernel memory. (CVE-2014-2568)
    
    Sasha Levin reported a bug in the Linux kernel's virtual memory management
    subsystem. An unprivileged local user could exploit this flaw to cause a
    denial of service (system crash). (CVE-2014-3122)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.04 LTS:
      linux-image-3.11.0-23-generic   3.11.0-23.40~precise1
      linux-image-3.11.0-23-generic-lpae  3.11.0-23.40~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-2239-1
      CVE-2014-0155, CVE-2014-2568, CVE-2014-3122, CVE-2014-3153
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-lts-saucy/3.11.0-23.40~precise1
    
    
    
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