Ubuntu 2632-1: Linux kernel (OMAP4) vulnerabilities

    Date10 Jun 2015
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the kernel.
    Ubuntu Security Notice USN-2632-1
    June 10, 2015
    linux-ti-omap4 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-ti-omap4: Linux kernel for OMAP4
    Jan Beulich discovered the Xen virtual machine subsystem of the Linux
    kernel did not properly restrict access to PCI command registers. A local
    guest user could exploit this flaw to cause a denial of service (host
    crash). (CVE-2015-2150)
    A privilege escalation was discovered in the fork syscall via the int80
    entry on 64 bit kernels with 32 bit emulation support. An unprivileged
    local attacker could exploit this flaw to increase their privileges on the
    system. (CVE-2015-2830)
    A memory corruption issue was discovered in AES decryption when using the
    Intel AES-NI accelerated code path. A remote attacker could exploit this
    flaw to cause a denial of service (system crash) or potentially escalate
    privileges on Intel base machines with AEC-GCM mode IPSec security
    association. (CVE-2015-3331)
    Wen Xu discovered a use-after-free flaw in the Linux kernel's ipv4 ping
    support. A local user could exploit this flaw to cause a denial of service
    (system crash) or gain administrative privileges on the system.
    Carl H Lunde discovered missing sanity checks in the the Linux kernel's UDF
    file system (CONFIG_UDF_FS). A local attack could exploit this flaw to cause
    a denial of service (system crash) by using a corrupted filesystem image.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 12.04 LTS:
      linux-image-3.2.0-1465-omap4    3.2.0-1465.85
    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-2015-2150, CVE-2015-2830, CVE-2015-3331, CVE-2015-3636,
    Package Information:
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