Ubuntu 2290-1: Linux kernel vulnerabilities

    Date16 Jul 2014
    CategoryUbuntu
    38
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-2290-1
    July 17, 2014
    
    linux vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 14.04 LTS
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    Sasha Levin reported a flaw in the Linux kernel's point-to-point protocol
    (PPP) when used with the Layer Two Tunneling Protocol (L2TP). A local user
    could exploit this flaw to gain administrative privileges. (CVE-2014-4943)
    
    Salva Peiró discovered an information leak in the Linux kernel's media-
    device driver. A local attacker could exploit this flaw to obtain sensitive
    information from kernel memory. (CVE-2014-1739)
    
    A bounds check error was discovered in the socket filter subsystem of the
    Linux kernel. A local user could exploit this flaw to cause a denial of
    service (system crash) via crafted BPF instructions. (CVE-2014-3144)
    
    A remainder calculation error was discovered in the socket filter subsystem
    of the Linux kernel. A local user could exploit this flaw to cause a denial
    of service (system crash) via crafted BPF instructions. (CVE-2014-3145)
    
    A flaw was discovered in the Linux kernel's handling of hugetlb entries. A
    local user could exploit this flaw to cause a denial service (memory
    corruption or system crash). (CVE-2014-3940)
    
    Don Bailey discovered a flaw in the LZO decompress algorithm used by the
    Linux kernel. An attacker could exploit this flaw to cause a denial of
    service (memory corruption or OOPS). (CVE-2014-4608)
    
    Don Bailey and Ludvig Strigeus discovered an integer overflow in the Linux
    kernel's implementation of the LZ4 decompression algorithm, when used by
    code not complying with API limitations. An attacker could exploit this
    flaw to cause a denial of service (memory corruption) or possibly other
    unspecified impact. (CVE-2014-4611)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 14.04 LTS:
      linux-image-3.13.0-32-generic   3.13.0-32.57
      linux-image-3.13.0-32-generic-lpae  3.13.0-32.57
      linux-image-3.13.0-32-lowlatency  3.13.0-32.57
      linux-image-3.13.0-32-powerpc-e500  3.13.0-32.57
      linux-image-3.13.0-32-powerpc-e500mc  3.13.0-32.57
      linux-image-3.13.0-32-powerpc-smp  3.13.0-32.57
      linux-image-3.13.0-32-powerpc64-emb  3.13.0-32.57
      linux-image-3.13.0-32-powerpc64-smp  3.13.0-32.57
    
    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-2290-1
      CVE-2014-1739, CVE-2014-3144, CVE-2014-3145, CVE-2014-3940,
      CVE-2014-4608, CVE-2014-4611, CVE-2014-4943
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/3.13.0-32.57
    
    
    
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