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Tuesday, April 14th, 2020

    Time Event
    3:10p
    Security updates for Tuesday
    Security updates have been issued by Arch Linux (thunderbird), Debian (thunderbird), Fedora (drupal7-ckeditor, nrpe, and php-robrichards-xmlseclibs1), Red Hat (firefox and kernel), SUSE (quartz), and Ubuntu (thunderbird).
    4:47p
    Changes To Zimbra's Open Source Policy
    The Zimbra email and collaboration suite
    will change its open source policy. This post from the
    Zeta Alliance     notes the changes for Zimbra 9. "John E. explained
    that Zimbra 9 introduces a change to Synacor's open source policy for
    Zimbra. Starting with Zimbra 9, a binary version of Zimbra 9 will no longer
    be released to the community and will instead only be made available to
    Zimbra Network Edition customers. There are currently no plans to release
    the source code for Zimbra 9 to the community. Zimbra 8.8.15 will remain
    open source for the community and continue to be supported for the
    remainder of its lifecycle through December, 31, 2024 (https://www.zimbra.com/support/support-
    ... lifecycle/    ). Version 8.8.15 will also continue to receive patches
    during this time frame. John E. described this new model for Zimbra 9 as
    "open core" where the open source products on which Zimbra is built will
    continue to be freely available, but the Zimbra 9 product itself will not
    be open source.    " (Thanks to Emmanuel Seyman)
    8:22p
    [$] Concurrency bugs should fear the big bad data-race detector (part 2)
    In part 1 of this article, we gave an overview of the Kernel Concurrency
    Sanitizer     (KCSAN) and looked how it can detect data races in the
    kernel. KCSAN uses the definition
    of "data race" that is part of the
    Linux-Kernel
    Memory Consistency Model     (LKMM), but there is more that KCSAN can do.
    This concluding part of the article describes other ways that the tool can
    be used to find data races and other kinds of problems in concurrent code.
    It provides some ideas on strategies and best practices, briefly considers
    some alternative approaches, and concludes with some known limitations.

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