Ubuntu 1476-1: Linux kernel (OMAP4) vulnerabilities

    Date15 Jun 2012
    CategoryUbuntu
    55
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    ==========================================================================
    Ubuntu Security Notice USN-1476-1
    June 15, 2012
    
    linux-ti-omap4 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 11.10
    
    Summary:
    
    Several security issues were fixed in the kernel.
    
    Software Description:
    - linux-ti-omap4: Linux kernel for OMAP4
    
    Details:
    
    Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation.
    A remote NFS server (attacker) could exploit this flaw to cause a denial of
    service. (CVE-2011-4131)
    
    A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
    An administrative user in the guest OS could leverage this flaw to cause a
    denial of service in the host OS. (CVE-2012-2121)
    
    Schacher Raindel discovered a flaw in the Linux kernel's memory handling
    when hugetlb is enabled. An unprivileged local attacker could exploit this
    flaw to cause a denial of service and potentially gain higher privileges.
    (CVE-2012-2133)
    
    Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's
    handling of ioctls. An unprivileged local user could leverage this flaw to
    cause a denial of service. (CVE-2012-2313)
    
    Timo Warns reported multiple flaws in the Linux kernel's hfsplus
    filesystem. An unprivileged local user could exploit these flaws to gain
    root system priviliges. (CVE-2012-2319)
    
    Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
    handling of cliprect on 32 bit systems. An unprivileged local attacker
    could leverage this flaw to cause a denial of service or potentially gain
    root privileges. (CVE-2012-2383)
    
    Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
    handling of buffer_count on 32 bit systems. An unprivileged local attacker
    could leverage this flaw to cause a denial of service or potentially gain
    root privileges. (CVE-2012-2384)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 11.10:
      linux-image-3.0.0-1211-omap4    3.0.0-1211.23
    
    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-1476-1
      CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313,
      CVE-2012-2319, CVE-2012-2383, CVE-2012-2384
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.0.0-1211.23
    
    
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