Ubuntu 1972-1: Linux kernel vulnerabilities

    Date27 Sep 2013
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    Ubuntu Security Notice USN-1972-1
    September 27, 2013
    linux vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 12.10
    Several security issues were fixed in the kernel.
    Software Description:
    - linux: Linux kernel
    Vince Weaver discovered a flaw in the perf subsystem of the Linux kernel on
    ARM platforms. A local user could exploit this flaw to gain privileges or
    cause a denial of service (system crash). (CVE-2013-4254)
    A failure to validate block numbers was discovered in the Linux kernel's
    implementation of the XFS filesystem. A local user can cause a denial of
    service (system crash) if they can mount, or cause to be mounted a
    corrupted or special crafted XFS filesystem. (CVE-2013-1819)
    An information leak was discovered in the Linux kernel's IPSec key_socket
    when using the notify_policy interface. A local user could exploit this
    flaw to examine potentially sensitive information in kernel memory.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 12.10:
      linux-image-3.5.0-41-generic    3.5.0-41.64
      linux-image-3.5.0-41-highbank   3.5.0-41.64
      linux-image-3.5.0-41-omap       3.5.0-41.64
      linux-image-3.5.0-41-powerpc-smp  3.5.0-41.64
      linux-image-3.5.0-41-powerpc64-smp  3.5.0-41.64
    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.
      CVE-2013-1819, CVE-2013-2237, CVE-2013-4254
    Package Information:

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