Ubuntu 1271-1: Linux kernel (i.MX51) vulnerabilities

    Date 21 Nov 2011
    97
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-1271-1
    November 21, 2011
    
    linux-fsl-imx51 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-fsl-imx51: Linux kernel for IMX51
    
    Details:
    
    It was discovered that CIFS incorrectly handled authentication. When a user
    had a CIFS share mounted that required authentication, a local user could
    mount the same share without knowing the correct password. (CVE-2011-1585)
    
    It was discovered that the GRE protocol incorrectly handled netns
    initialization. A remote attacker could send a packet while the ip_gre
    module was loading, and crash the system, leading to a denial of service.
    (CVE-2011-1767)
    
    It was discovered that the IP/IP protocol incorrectly handled netns
    initialization. A remote attacker could send a packet while the ipip module
    was loading, and crash the system, leading to a denial of service.
    (CVE-2011-1768)
    
    Vasily Averin discovered that the NFS Lock Manager (NLM) incorrectly
    handled unlock requests. A local attacker could exploit this to cause a
    denial of service. (CVE-2011-2491)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 10.04 LTS:
      linux-image-2.6.31-612-imx51    2.6.31-612.30
    
    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:
      https://www.ubuntu.com/usn/usn-1271-1
      CVE-2011-1585, CVE-2011-1767, CVE-2011-1768, CVE-2011-2491
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-fsl-imx51/2.6.31-612.30
    
    
    

    LinuxSecurity Poll

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    /main-polls/34-if-you-are-using-full-disk-encryption-are-you-concerned-about-the-resulting-performance-hit?task=poll.vote&format=json
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    [{"id":"120","title":"Yes","votes":"14","type":"x","order":"1","pct":58.33,"resources":[]},{"id":"121","title":"No ","votes":"10","type":"x","order":"2","pct":41.67,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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