Ubuntu 2441-1: Linux kernel vulnerabilities

    Date12 Dec 2014
    CategoryUbuntu
    30
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-2441-1
    December 12, 2014
    
    linux vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    An information leak in the Linux kernel was discovered that could leak the
    high 16 bits of the kernel stack address on 32-bit Kernel Virtual Machine
    (KVM) paravirt guests. A user in the guest OS could exploit this leak to
    obtain information that could potentially be used to aid in attacking the
    kernel. (CVE-2014-8134)
    
    A flaw in the handling of malformed ASCONF chunks by SCTP (Stream Control
    Transmission Protocol) implementation in the Linux kernel was discovered. A
    remote attacker could exploit this flaw to cause a denial of service
    (system crash). (CVE-2014-3673)
    
    A flaw in the handling of duplicate ASCONF chunks by SCTP (Stream Control
    Transmission Protocol) implementation in the Linux kernel was discovered. A
    remote attacker could exploit this flaw to cause a denial of service
    (panic). (CVE-2014-3687)
    
    It was discovered that excessive queuing by SCTP (Stream Control
    Transmission Protocol) implementation in the Linux kernel can cause memory
    pressure. A remote attacker could exploit this flaw to cause a denial of
    service. (CVE-2014-3688)
    
    A null pointer dereference flaw was discovered in the the Linux kernel's
    SCTP implementation when ASCONF is used. A remote attacker could exploit
    this flaw to cause a denial of service (system crash) via a malformed INIT
    chunk. (CVE-2014-7841)
    
    Jouni Malinen reported a flaw in the handling of fragmentation in the
    mac8Linux subsystem of the kernel. A remote attacker could exploit this
    flaw to obtain potential sensitive cleartext information by reading
    packets. (CVE-2014-8709)
    
    A stack buffer overflow was discovered in the ioctl command handling for
    the Technotrend/Hauppauge USB DEC devices driver. A local user could
    exploit this flaw to cause a denial of service (system crash) or possibly
    gain privileges. (CVE-2014-8884)
    
    Andy Lutomirski discovered that the Linux kernel does not properly handle
    faults associated with the Stack Segment (SS) register on the x86
    architecture. A local attacker could exploit this flaw to cause a denial of
    service (panic). (CVE-2014-9090)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 10.04 LTS:
      linux-image-2.6.32-70-386       2.6.32-70.137
      linux-image-2.6.32-70-generic   2.6.32-70.137
      linux-image-2.6.32-70-generic-pae  2.6.32-70.137
      linux-image-2.6.32-70-ia64      2.6.32-70.137
      linux-image-2.6.32-70-lpia      2.6.32-70.137
      linux-image-2.6.32-70-powerpc   2.6.32-70.137
      linux-image-2.6.32-70-powerpc-smp  2.6.32-70.137
      linux-image-2.6.32-70-powerpc64-smp  2.6.32-70.137
      linux-image-2.6.32-70-preempt   2.6.32-70.137
      linux-image-2.6.32-70-server    2.6.32-70.137
      linux-image-2.6.32-70-sparc64   2.6.32-70.137
      linux-image-2.6.32-70-sparc64-smp  2.6.32-70.137
      linux-image-2.6.32-70-versatile  2.6.32-70.137
      linux-image-2.6.32-70-virtual   2.6.32-70.137
    
    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-2441-1
      CVE-2014-3673, CVE-2014-3687, CVE-2014-3688, CVE-2014-7841,
      CVE-2014-8134, CVE-2014-8709, CVE-2014-8884, CVE-2014-9090
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/2.6.32-70.137
    
    
    
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