Ubuntu 1700-2: Linux kernel (OMAP4) regression

    Date01 Feb 2013
    CategoryUbuntu
    41
    Posted ByLinuxSecurity Advisories
    USN-1700-1 introduced a regression in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-1700-2
    February 01, 2013
    
    linux-ti-omap4 regression
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.10
    
    Summary:
    
    USN-1700-1 introduced a regression in the Linux kernel.
    
    Software Description:
    - linux-ti-omap4: Linux kernel for OMAP4
    
    Details:
    
    USN-1700-1 fixed vulnerabilities in the Linux kernel. Due to an unrelated
    regression inotify/fanotify stopped working after upgrading. This update
    fixes the problem.
    
    We apologize for the inconvenience.
    
    Original advisory details:
    
     A flaw was discovered in the Linux kernel's handling of script execution
     when module loading is enabled. A local attacker could exploit this flaw to
     cause a leak of kernel stack contents. (CVE-2012-4530)
     
     Florian Weimer discovered that hypervkvpd, which is distributed in the
     Linux kernel, was not correctly validating source addresses of netlink
     packets. An untrusted local user can cause a denial of service by causing
     hypervkvpd to exit. (CVE-2012-5532)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.10:
      linux-image-3.5.0-218-omap4     3.5.0-218.26
    
    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-1700-2
      http://www.ubuntu.com/usn/usn-1700-1
      https://launchpad.net/bugs//1101666
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux-ti-omap4/3.5.0-218.26
    
    
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