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Ubuntu Security Update USN-3256-1: Linux kernel vulnerability

Discussion in 'Linux Security Announcements (Automated)' started by LinuxBot, Apr 26, 2017 at 3:22 PM.

  1. LinuxBot

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    Ubuntu Security Notice USN-3256-1


    4th April, 2017

    linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon, linux-ti-omap4 vulnerability


    A security issue affects these releases of Ubuntu and its derivatives:

    • Ubuntu 16.10
    • Ubuntu 16.04 LTS
    • Ubuntu 14.04 LTS
    • Ubuntu 12.04 LTS
    Summary


    The system could be made to crash under certain conditions.

    Software description

    • linux - Linux kernel
    • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
    • linux-gke - Linux kernel for Google Container Engine (GKE) systems
    • linux-raspi2 - Linux kernel for Raspberry Pi 2
    • linux-snapdragon - Linux kernel for Snapdragon Processors
    • linux-ti-omap4 - Linux kernel for OMAP4
    Details


    Andrey Konovalov discovered that the AF_PACKET implementation in the Linux
    kernel did not properly validate certain block-size data. A local attacker
    could use this to cause a denial of service (system crash).

    Update instructions


    The problem can be corrected by updating your system to the following package version:

    Ubuntu 16.10:
    linux-image-powerpc-smp 4.8.0.46.58
    linux-image-powerpc-e500mc 4.8.0.46.58
    linux-image-generic 4.8.0.46.58
    linux-image-4.8.0-46-lowlatency 4.8.0-46.49
    linux-image-4.8.0-46-generic-lpae 4.8.0-46.49
    linux-image-4.8.0-46-powerpc-smp 4.8.0-46.49
    linux-image-4.8.0-1033-raspi2 4.8.0-1033.36
    linux-image-4.8.0-46-powerpc-e500mc 4.8.0-46.49
    linux-image-generic-lpae 4.8.0.46.58
    linux-image-4.8.0-46-powerpc64-emb 4.8.0-46.49
    linux-image-4.8.0-46-generic 4.8.0-46.49
    linux-image-lowlatency 4.8.0.46.58
    linux-image-raspi2 4.8.0.1033.37
    linux-image-powerpc64-smp 4.8.0.46.58
    Ubuntu 16.04 LTS:
    linux-image-powerpc-e500mc 4.4.0.72.78
    linux-image-4.4.0-72-lowlatency 4.4.0-72.93
    linux-image-4.4.0-72-powerpc-smp 4.4.0-72.93
    linux-image-4.4.0-72-powerpc-e500mc 4.4.0-72.93
    linux-image-4.4.0-1055-snapdragon 4.4.0-1055.59
    linux-image-powerpc64-smp-lts-utopic 4.4.0.72.78
    linux-image-4.4.0-72-generic 4.4.0-72.93
    linux-image-4.4.0-72-generic-lpae 4.4.0-72.93
    linux-image-powerpc64-smp-lts-xenial 4.4.0.72.78
    linux-image-4.4.0-72-powerpc64-smp 4.4.0-72.93
    linux-image-gke 4.4.0.1010.12
    linux-image-powerpc64-smp-lts-vivid 4.4.0.72.78
    linux-image-generic 4.4.0.72.78
    linux-image-snapdragon 4.4.0.1055.48
    linux-image-aws 4.4.0.1013.16
    linux-image-raspi2 4.4.0.1052.53
    linux-image-powerpc-smp 4.4.0.72.78
    linux-image-4.4.0-1052-raspi2 4.4.0-1052.59
    linux-image-generic-lpae 4.4.0.72.78
    linux-image-powerpc64-smp-lts-wily 4.4.0.72.78
    linux-image-4.4.0-1013-aws 4.4.0-1013.22
    linux-image-4.4.0-1010-gke 4.4.0-1010.10
    linux-image-powerpc64-smp 4.4.0.72.78
    linux-image-lowlatency 4.4.0.72.78
    Ubuntu 14.04 LTS:
    linux-image-powerpc-smp 3.13.0.116.126
    linux-image-powerpc-e500mc 3.13.0.116.126
    linux-image-generic 3.13.0.116.126
    linux-image-generic-lpae 3.13.0.116.126
    linux-image-3.13.0-116-powerpc64-smp 3.13.0-116.163
    linux-image-3.13.0-116-powerpc-e500mc 3.13.0-116.163
    linux-image-3.13.0-116-lowlatency 3.13.0-116.163
    linux-image-powerpc-e500 3.13.0.116.126
    linux-image-3.13.0-116-generic 3.13.0-116.163
    linux-image-3.13.0-116-powerpc-e500 3.13.0-116.163
    linux-image-3.13.0-116-powerpc-smp 3.13.0-116.163
    linux-image-powerpc64-smp 3.13.0.116.126
    linux-image-lowlatency 3.13.0.116.126
    linux-image-3.13.0-116-generic-lpae 3.13.0-116.163
    Ubuntu 12.04 LTS:
    linux-image-3.2.0-126-virtual 3.2.0-126.169
    linux-image-3.2.0-126-highbank 3.2.0-126.169
    linux-image-3.2.0-1504-omap4 3.2.0-1504.131
    linux-image-3.2.0-126-generic-pae 3.2.0-126.169
    linux-image-powerpc-smp 3.2.0.126.141
    linux-image-generic 3.2.0.126.141
    linux-image-3.2.0-126-omap 3.2.0-126.169
    linux-image-3.2.0-126-generic 3.2.0-126.169
    linux-image-generic-pae 3.2.0.126.141
    linux-image-highbank 3.2.0.126.141
    linux-image-3.2.0-126-powerpc64-smp 3.2.0-126.169
    linux-image-powerpc64-smp 3.2.0.126.141
    linux-image-omap4 3.2.0.1504.99
    linux-image-3.2.0-126-powerpc-smp 3.2.0-126.169
    linux-image-omap 3.2.0.126.141
    linux-image-virtual 3.2.0.126.141

    To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

    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


    CVE-2017-7308

    Continue reading...
     

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