LWN.net's Journal
 
 [Most Recent Entries] [Calendar View]

Tuesday, September 22nd, 2020

    Time Event
    1:35p
    Cook: Security things in Linux v5.7
    Kees Cook catches
    up with the security-related changes     in the 5.7 kernel.
    "The kernel’s Linux Security Module (LSM) API provide a way to write
    security modules that have traditionally implemented various Mandatory
    Access Control (MAC) systems like SELinux, AppArmor, etc. The LSM hooks are
    numerous and no one LSM uses them all, as some hooks are much more
    specialized (like those used by IMA, Yama, LoadPin, etc). There was not,
    however, any way to externally attach to these hooks (not even through a
    regular loadable kernel module) nor build fully dynamic security policy,
    until KP Singh landed the API for building LSM policy using BPF. With this,
    it is possible (for a privileged process) to write kernel LSM hooks in BPF,
    allowing for totally custom security policy (and reporting).    "
    2:43p
    Security updates for Tuesday
    Security updates have been issued by Mageia (mysql-connector-java), openSUSE (chromium, curl, libqt4, and singularity), Red Hat (bash and kernel), SUSE (python-pip and python3), and Ubuntu (busybox, ceph, freeimage, libofx, libpam-tacplus, linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon, linux, linux-azure, linux-gcp, linux-oracle, novnc, and tnef).
    3:46p
    Firefox 81.0
    Firefox 81.0 is out. This version allows you to control media from the
    keyboard or headset, introduces the Alpenglow theme, adds ArcoForm support to
    fill in, print, and save supported PDF forms, and more. See the release notes
    for details.
    8:38p
    Linux Journal is Back
    Linux Journal has returned
    under the ownership of Slashdot Media. "As Linux enthusiasts and long-time fans of Linux Journal, we were disappointed to hear about Linux Journal closing it's doors last year. It took some time, but fortunately we were able to get a deal done that allows us to keep Linux Journal alive now and indefinitely. It's important that amazing resources like Linux Journal never disappear."
    9:29p
    [$] Accurate timestamps for the Ftrace ring buffer
    The function
    tracer (ftrace) subsystem     has become an essential part of the kernel's
    introspection tooling. Like many kernel subsystems, ftrace uses a ring buffer to
    quickly
    communicate events to user space; those events include a timestamp to
    indicate when they occurred. Until recently, the design of the ring buffer
    has led to the creation of inaccurate timestamps when events are generated
    from interrupt handlers. That problem has now been solved; read on for an
    in-depth discussion of how this issue came about and the form of its
    solution.
    10:17p
    [$] Python 3.9 is around the corner
    Python
    3.9.0rc2     was released on September 17, with the final version scheduled
    for October 5, roughly a year after the release of Python 3.8. Python 3.9
    will come with new operators for dictionary unions, a new parser, two string
    operations meant to eliminate some longstanding confusion, as well as
    improved time-zone handling and type hinting. Developers may need to do some
    porting for code coming from Python 3.8 or earlier, as the new release has
    removed several previously-deprecated features still lingering from Python
    2.7.

    << Previous Day 2020/09/22
    [Calendar]     		Next Day >>

LWN.net   About LJ.Rossia.org