Ubuntu 1293-1: Linux kernel vulnerabilities

    Date 08 Dec 2011
    125
    Posted By LinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-1293-1
    December 08, 2011
    
    linux vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 10.10
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux: Linux kernel
    
    Details:
    
    A bug was discovered in the XFS filesystem's handling of pathnames. A local
    attacker could exploit this to crash the system, leading to a denial of
    service, or gain root privileges. (CVE-2011-4077)
    
    Nick Bowler discovered the kernel GHASH message digest algorithm
    incorrectly handled error conditions. A local attacker could exploit this
    to cause a kernel oops. (CVE-2011-4081)
    
    A flaw was found in the Journaling Block Device (JBD). A local attacker
    able to mount ext3 or ext4 file systems could exploit this to crash the
    system, leading to a denial of service. (CVE-2011-4132)
    
    A bug was found in the way headroom check was performed in
    udp6_ufo_fragment() function. A remote attacker could use this flaw to
    crash the system. (CVE-2011-4326)
    
    Clement Lecigne discovered a bug in the HFS file system bounds checking.
    When a malformed HFS file system is mounted a local user could crash the
    system or gain root privileges. (CVE-2011-4330)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 10.10:
      linux-image-2.6.35-31-generic   2.6.35-31.63
      linux-image-2.6.35-31-generic-pae  2.6.35-31.63
      linux-image-2.6.35-31-omap      2.6.35-31.63
      linux-image-2.6.35-31-powerpc   2.6.35-31.63
      linux-image-2.6.35-31-powerpc-smp  2.6.35-31.63
      linux-image-2.6.35-31-powerpc64-smp  2.6.35-31.63
      linux-image-2.6.35-31-server    2.6.35-31.63
      linux-image-2.6.35-31-versatile  2.6.35-31.63
      linux-image-2.6.35-31-virtual   2.6.35-31.63
    
    After a standard system update you need to reboot your computer to make
    all the necessary changes.
    
    References:
      https://www.ubuntu.com/usn/usn-1293-1
      CVE-2011-4077, CVE-2011-4081, CVE-2011-4132, CVE-2011-4326,
      CVE-2011-4330
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/2.6.35-31.63
    
    
    

    LinuxSecurity Poll

    If you are using full-disk encryption: are you concerned about the resulting performance hit?

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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
    34
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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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