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Thursday, April 22nd, 2021

    Time Event
    12:41a
    [$] LWN.net Weekly Edition for April 22, 2021
    The LWN.net Weekly Edition for April 22, 2021 is available.
    1:17p
    Security updates for Thursday
    Security updates have been issued by Debian (thunderbird and wordpress), Fedora (curl, firefox, mediawiki, mingw-binutils, os-autoinst, and rpm-ostree), Oracle (java-1.8.0-openjdk and java-11-openjdk), SUSE (kernel, pcp, and tomcat6), and Ubuntu (linux, linux-aws, linux-gke-5.3, linux-hwe, linux-kvm, linux-lts-xenial, linux-oem-5.6, linux-raspi2-5.3, linux-snapdragon).
    1:52p
    [$] Toward signed BPF programs
    The kernel's BPF virtual machine is versatile;
    it is possible to load BPF programs into the kernel to carry out
    a large (and growing) set of tasks. The growing body of BPF code can
    reasonably be
    thought of as kernel code in its own right. But, while the kernel can
    check signatures on loadable modules and prevent the loading of modules
    that are not properly signed, there is no such mechanism for BPF programs;
    any sufficiently privileged process can load any program that will pass the
    verifier. One might think that adding this checking for BPF would be
    straightforward, but that subsystem has some unique characteristics that
    make things more challenging than one might expect. There may be a
    solution in the works, though; fittingly, it works by loading yet another BPF
    program.
    2:55p
    Ubuntu 21.04 released
    The Ubuntu
    21.04
    distribution release is available. "Today, Canonical
    released Ubuntu 21.04 with native Microsoft Active Directory integration,
    Wayland graphics by default, and a Flutter application development
    SDK. Separately, Canonical and Microsoft announced performance optimization
    and joint support for Microsoft SQL Server on Ubuntu.
    "
    10:12p
    A statement on the UMN mess
    Speaking for the Linux Foundation Technical Advisory Board, Kees Cook has posted a brief statement on the controversy over patches submitted from the University of Minnesota.

    The LF Technical Advisory Board is taking a look at the history of UMN's contributions and their associated research projects. At present, it seems the vast majority of patches have been in good faith, but we're continuing to review the work. Several public conversations have already started around our expectations of contributors.

    Stay tuned for more.

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