Ubuntu 3342-1: Linux kernel vulnerabilities

    Date29 Jun 2017
    CategoryUbuntu
    46
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3342-1
    June 29, 2017
    
    linux, linux-raspi2 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 16.10
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux: Linux kernel
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    
    Details:
    
    USN 3326-1 fixed a vulnerability in the Linux kernel. However, that
    fix introduced regressions for some Java applications. This update
    addresses the issue. We apologize for the inconvenience.
    
    It was discovered that a use-after-free flaw existed in the filesystem
    encryption subsystem in the Linux kernel. A local attacker could use this
    to cause a denial of service (system crash). (CVE-2017-7374)
    
    Roee Hay discovered that the parallel port printer driver in the Linux
    kernel did not properly bounds check passed arguments. A local attacker
    with write access to the kernel command line arguments could use this to
    execute arbitrary code. (CVE-2017-1000363)
    
    Ingo Molnar discovered that the VideoCore DRM driver in the Linux kernel
    did not return an error after detecting certain overflows. A local attacker
    could exploit this issue to cause a denial of service (OOPS).
    (CVE-2017-5577)
    
    Li Qiang discovered that an integer overflow vulnerability existed in the
    Direct Rendering Manager (DRM) driver for VMWare devices in the Linux
    kernel. A local attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2017-7294)
    
    It was discovered that a double-free vulnerability existed in the IPv4
    stack of the Linux kernel. An attacker could use this to cause a denial of
    service (system crash). (CVE-2017-8890)
    
    Andrey Konovalov discovered an IPv6 out-of-bounds read error in the Linux
    kernel's IPv6 stack. A local attacker could cause a denial of service or
    potentially other unspecified problems. (CVE-2017-9074)
    
    Andrey Konovalov discovered a flaw in the handling of inheritance in the
    Linux kernel's IPv6 stack. A local user could exploit this issue to cause a
    denial of service or possibly other unspecified problems. (CVE-2017-9075)
    
    It was discovered that dccp v6 in the Linux kernel mishandled inheritance.
    A local attacker could exploit this issue to cause a denial of service or
    potentially other unspecified problems. (CVE-2017-9076)
    
    It was discovered that the transmission control protocol (tcp) v6 in the
    Linux kernel mishandled inheritance. A local attacker could exploit this
    issue to cause a denial of service or potentially other unspecified
    problems. (CVE-2017-9077)
    
    It was discovered that the IPv6 stack in the Linux kernel was performing
    its over write consistency check after the data was actually overwritten. A
    local attacker could exploit this flaw to cause a denial of service (system
    crash). (CVE-2017-9242)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 16.10:
      linux-image-4.8.0-1042-raspi2   4.8.0-1042.46
      linux-image-4.8.0-58-generic    4.8.0-58.63
      linux-image-4.8.0-58-generic-lpae  4.8.0-58.63
      linux-image-4.8.0-58-lowlatency  4.8.0-58.63
      linux-image-4.8.0-58-powerpc-e500mc  4.8.0-58.63
      linux-image-4.8.0-58-powerpc-smp  4.8.0-58.63
      linux-image-4.8.0-58-powerpc64-emb  4.8.0-58.63
      linux-image-generic             4.8.0.58.71
      linux-image-generic-lpae        4.8.0.58.71
      linux-image-lowlatency          4.8.0.58.71
      linux-image-powerpc-e500mc      4.8.0.58.71
      linux-image-powerpc-smp         4.8.0.58.71
      linux-image-powerpc64-emb       4.8.0.58.71
      linux-image-powerpc64-smp       4.8.0.58.71
      linux-image-raspi2              4.8.0.1042.46
      linux-image-virtual             4.8.0.58.71
    
    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.
    Unless you manually uninstalled the standard kernel metapackages
    (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
    linux-powerpc), a standard system upgrade will automatically perform
    this as well.
    
    References:
      https://www.ubuntu.com/usn/usn-3342-1
      https://www.ubuntu.com/usn/usn-3326-1
      https://launchpad.net/bugs/1699772
      CVE-2017-1000363, CVE-2017-5577, CVE-2017-7294, CVE-2017-7374,
      CVE-2017-8890, CVE-2017-9074, CVE-2017-9075, CVE-2017-9076,
      CVE-2017-9077, CVE-2017-9242
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.8.0-58.63
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.8.0-1042.46
    
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