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Wednesday, September 11th, 2019

    Time Event
    2:32p
    Security updates for Wednesday
    Security updates have been issued by Fedora (python38), openSUSE (nginx, nodejs10, nodejs8, python-Twisted, python-Werkzeug, SDL2_image, SDL_image, and util-linux and shadow), Oracle (firefox and nghttp2), Red Hat (.NET Core, firefox, kernel, libwmf, pki-deps:10.6, and poppler), Scientific Linux (firefox), SUSE (ghostscript, libgcrypt, podman, python-SQLAlchemy, qemu, and webkit2gtk3), and Ubuntu (curl, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, systemd, and tomcat8).
    3:25p
    [$] SGX and security modules
    Software Guard Extensions (SGX) is a set of security-related
    instructions for Intel processors; it allows the creation of private
    regions of memory, called "enclaves". The aim of this feature is to work
    like an inverted sandbox: instead of protecting the system from malicious
    code, it protects an application from a compromised kernel hypervisor,
    or other application. Linux support for SGX has existed out-of-tree
    for years, and the effort of upstreaming it has reached an
    impressive version
    22 of the patch set    . During the upstreaming discussion, the kernel
    developers discovered
    that the proposed SGX API did not play nicely with existing security
    mechanisms, including Linux security modules
    (LSMs).
    4:31p
    [$] The USB debugging arsenal
    At the
    2019
    Embedded
    Linux Conference North America    , which was held in San Diego in August,
    Krzysztof Opasiak gave a presentation on demystifying the ways to monitor—and
    even change—USB traffic on a Linux system. He started with the basics of
    the USB protocol and worked up into software and hardware tools to
    observe, modify, and fuzz the messages that get sent. Those tools are part of the
    arsenal that is available to those interested in looking deeply into USB.
    6:40p
    [$] Topics from the Open Printing microconference
    On day two of the 2019
    Linux Plumbers Conference    , two of the principals behind the Open Printing
    project     led the very first Open Printing
    microconference    . Project leader Till Kamppeter and program manager
    Aveek Basu described the current state of printing on Linux and some of the
    plans for the future, including supporting scanning for multi-function
    devices. The picture they painted was rosy, at least for printing, which
    may not quite match the experience of many Linux users. As with many
    projects, though, Open Printing is starved for contributors—something that
    was reflected in the sparse attendance at the microconference.

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