Ubuntu 1532-1: Linux kernel (OMAP4) vulnerabilities

    Date10 Aug 2012
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    Ubuntu Security Notice USN-1532-1
    August 10, 2012
    linux-ti-omap4 vulnerabilities
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 11.10
    Several security issues were fixed in the kernel.
    Software Description:
    - linux-ti-omap4: Linux kernel for OMAP4
    An error was discovered in the Linux kernel's network TUN/TAP device
    implementation. A local user with access to the TUN/TAP interface (which is
    not available to unprivileged users until granted by a root user) could
    exploit this flaw to crash the system or potential gain administrative
    privileges. (CVE-2012-2136)
    Ulrich Obergfell discovered an error in the Linux kernel's memory
    management subsystem on 32 bit PAE systems with more than 4GB of memory
    installed. A local unprivileged user could exploit this flaw to crash the
    system. (CVE-2012-2373)
    A flaw was discovered in the Linux kernel's epoll system call. An
    unprivileged local user could use this flaw to crash the system.
    Some errors where discovered in the Linux kernel's UDF file system, which
    is used to mount some CD-ROMs and DVDs. An unprivileged local user could
    use these flaws to crash the system. (CVE-2012-3400)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 11.10:
      linux-image-3.0.0-1214-omap4    3.0.0-1214.26
    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.
      CVE-2012-2136, CVE-2012-2373, CVE-2012-3375, CVE-2012-3400
    Package Information:
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