Ubuntu 3419-1: Linux kernel vulnerabilities

    Date18 Sep 2017
    CategoryUbuntu
    44
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Linux kernel.
    ==========================================================================
    Ubuntu Security Notice USN-3419-1
    September 18, 2017
    
    linux, linux-raspi2 vulnerabilities
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 17.04
    
    Summary:
    
    Several security issues were fixed in the Linux kernel.
    
    Software Description:
    - linux: Linux kernel
    - linux-raspi2: Linux kernel for Raspberry Pi 2
    
    Details:
    
    It was discovered that a buffer overflow existed in the Bluetooth stack of
    the Linux kernel when handling L2CAP configuration responses. A physically
    proximate attacker could use this to cause a denial of service (system
    crash). (CVE-2017-1000251)
    
    It was discovered that a buffer overflow existed in the Broadcom FullMAC
    WLAN driver in the Linux kernel. A local attacker could use this to cause a
    denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2017-7541)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 17.04:
      linux-image-4.10.0-1018-raspi2  4.10.0-1018.21
      linux-image-4.10.0-35-generic   4.10.0-35.39
      linux-image-4.10.0-35-generic-lpae  4.10.0-35.39
      linux-image-4.10.0-35-lowlatency  4.10.0-35.39
      linux-image-generic             4.10.0.35.35
      linux-image-generic-lpae        4.10.0.35.35
      linux-image-lowlatency          4.10.0.35.35
      linux-image-raspi2              4.10.0.1018.19
    
    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-3419-1
      CVE-2017-1000251, CVE-2017-7541
    
    Package Information:
      https://launchpad.net/ubuntu/+source/linux/4.10.0-35.39
      https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1018.21
    
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