Ubuntu 2017-1: Linux kernel vulnerabilities

    Date08 Nov 2013
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    Ubuntu Security Notice USN-2017-1
    November 08, 2013
    linux vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 12.04 LTS
    Several security issues were fixed in the kernel.
    Software Description:
    - linux: Linux kernel
    A denial of service flaw was discovered in the Btrfs file system in the
    Linux kernel. A local user could cause a denial of service by creating a
    large number of files with names that have the same CRC32 hash value.
    A denial of service flaw was discovered in the Btrfs file system in the
    Linux kernel. A local user could cause a denial of service (prevent file
    creation) for a victim, by creating a file with a specific CRC32C hash
    value in a directory important to the victim. (CVE-2012-5375)
    Dan Carpenter discovered an information leak in the HP Smart Aray and
    Compaq SMART2 disk-array driver in the Linux kernel. A local user could
    exploit this flaw to obtain sensitive information from kernel memory.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 12.04 LTS:
      linux-image-3.2.0-56-generic    3.2.0-56.86
      linux-image-3.2.0-56-generic-pae  3.2.0-56.86
      linux-image-3.2.0-56-highbank   3.2.0-56.86
      linux-image-3.2.0-56-omap       3.2.0-56.86
      linux-image-3.2.0-56-powerpc-smp  3.2.0-56.86
      linux-image-3.2.0-56-powerpc64-smp  3.2.0-56.86
      linux-image-3.2.0-56-virtual    3.2.0-56.86
    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-2012-5374, CVE-2012-5375, CVE-2013-2147
    Package Information:
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