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LWN.net is a comprehensive source of news and opinions from and about the Linux community. This is the main LWN.net feed, listing all articles which are posted to the site front page.
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Security updates for Monday

월, 2019/09/23 - 11:48오후
Security updates have been issued by Debian (expat, php-pecl-http, and php7.0), Fedora (ImageMagick, jackson-annotations, jackson-bom, jackson-core, jackson-databind, and rubygem-rmagick), Mageia (chromium-browser-stable, ibus, kernel, samba, and thunderbird), openSUSE (chromium), Oracle (dovecot and kernel), Red Hat (dbus, kernel, kernel-alt, and kpatch-patch), Scientific Linux (dovecot and kernel), and SUSE (expat, ibus, kernel, kernel-source-rt, nmap, openssl, and webkit2gtk3).
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Stable kernels for the weekend

일, 2019/09/22 - 6:03오전
The 5.3.1, 5.2.17, 4.19.75, 4.14.146, 4.9.194, and 4.4.194 stable kernels are all available; each contains another set of important fixes.
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LLVM 9.0.0 released

일, 2019/09/22 - 4:44오전
Version 9.0.0 of the LLVM compiler suite is out. Headline changes include asm goto support — fixing one of the main impediments to compiling the kernel on x86 with LLVM — and non-experimental support for the RISC-V architecture.
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[$] Many uses for Core scheduling

토, 2019/09/21 - 4:23오전
Some new kernel features are welcomed by the kernel development community, while others are a rather harder sell. It is fair to say that core scheduling, which makes CPU scheduling harder by placing constraints on which processes may run simultaneously in a core, is of the latter variety. Core scheduling was the topic of (at least) three different sessions at the 2019 Linux Plumbers Conference. One of the most interesting outcomes, perhaps, is that there are use cases for this feature beyond protection from side-channel attacks.
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Security updates for Friday

토, 2019/09/21 - 12:07오전
Security updates have been issued by Debian (bird, opendmarc, php7.3, and qemu), Fedora (bird, dino, nbdkit, and openconnect), Oracle (nginx:1.14, patch, and thunderbird), Red Hat (dovecot, kernel, kernel-alt, and kernel-rt), Scientific Linux (thunderbird), and SUSE (kernel, openssl, openssl-1_1, python-SQLAlchemy, and python-Werkzeug).
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[$] System-call wrappers for glibc

금, 2019/09/20 - 12:42오전
The GNU C Library has long had a reputation for being hostile to the addition of wrappers for new Linux system calls; that has resulted in many system calls being unsupported by the library for years. That situation is changing, though. During the Toolchain microconference at the 2019 Linux Plumbers Conference, Maciej Rozycki talked about glibc's new attitude toward system-call wrappers, but also served notice that there is still significant work to do for the addition of any new system call.
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Stable kernels 5.2.16, 4.19.74, and 4.14.145

목, 2019/09/19 - 11:39오후
Greg Kroah-Hartman has announced the release of the 5.2.16, 4.19.74, and 4.14.145 stable kernels. Important fixes are contained within; users should upgrade.
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Security updates for Thursday

목, 2019/09/19 - 10:45오후
Security updates have been issued by CentOS (exiv2, firefox, ghostscript, http-parser, httpd, kdelibs and kde-settings, kernel, pango, qemu-kvm, and thunderbird), Debian (ibus), Fedora (kernel, kernel-headers, python34, qbittorrent, and samba), openSUSE (chromium), Oracle (go-toolset:ol8), Red Hat (kernel, nginx:1.14, patch, ruby, skydive, systemd, and thunderbird), Scientific Linux (thunderbird), SUSE (libreoffice, openssl-1_1, python-urllib3, and python-Werkzeug), and Ubuntu (tomcat9 and wpa, wpasupplicant).
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[$] LWN.net Weekly Edition for September 19, 2019

목, 2019/09/19 - 9:25오전
The LWN.net Weekly Edition for September 19, 2019 is available.
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[$] Deep argument inspection for seccomp

목, 2019/09/19 - 5:07오전
In the Kernel Summit track at the 2019 Linux Plumbers Conference, Christian Brauner and Kees Cook led a discussion on finding a way to do deep argument inspection for seccomp filtering. Currently, seccomp filters can only look at the top-level arguments to a system call, which means that there are use cases that cannot be supported. There was a lively discussion in the session, but no definitive conclusion was reached; various ideas were considered, but none seemed to quite fit the bill.
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Security updates for Wednesday

수, 2019/09/18 - 11:47오후
Security updates have been issued by CentOS (firefox and kernel), Debian (thunderbird), Fedora (curl), openSUSE (curl and python-Werkzeug), Oracle (kernel and thunderbird), Red Hat (rh-nginx114-nginx), SUSE (curl, ibus, MozillaFirefox, firefox-glib2, firefox-gtk3, openldap2, openssl, openssl1, python-urllib3, and util-linux and shadow), and Ubuntu (linux, linux-aws, linux-azure, linux-lts-trusty, linux-lts-xenial, linux-oracle, linux-raspi2, linux-snapdragon, and wpa).
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Moving Firefox to a faster 4-week release cycle

수, 2019/09/18 - 6:07오전
The Mozilla blog has an announcement that Firefox will be moving to 4-week release cycle, starting in 2020. "Shorter release cycles provide greater flexibility to support product planning and priority changes due to business or market requirements. With four-week cycles, we can be more agile and ship features faster, while applying the same rigor and due diligence needed for a high-quality and stable release. Also, we put new features and implementation of new Web APIs into the hands of developers more quickly." The Firefox ESR (Extended Support Release) release cadence will remain the same.
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[$] The properties of secure IoT devices

수, 2019/09/18 - 6:03오전
At Open Source Summit North America 2019, David Tarditi from Microsoft gave a talk on seven different properties for highly secure Internet of Things (IoT) devices. The properties are based on a Microsoft Research white paper [PDF] from 2017. His high-level summary of the talk was that if you are creating a device that will be connecting to the internet and you don't want it to get "owned", you should pay attention to the properties he would be describing. Overall, it was an interesting talk, with good analysis of the areas where effort needs to be focused to produce secure IoT devices, but it was somewhat marred by an advertisement for a proprietary product (which, naturally, checked all the boxes) at the end of the talk.
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CentOS Linux 7 (1908) released

수, 2019/09/18 - 1:46오전
A new release of CentOS Linux 7 is available. This release is tagged as 1908 and derived from Red Hat Enterprise Linux 7.7 source code. The release notes have the details. CentOS Linux 7 (1908) is also available for several alternate architectures.
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Security updates for Tuesday

화, 2019/09/17 - 11:50오후
Security updates have been issued by Debian (dino-im, python2.7, python3.4, and wpa), Fedora (kmplayer), openSUSE (podman and samba), Oracle (thunderbird), Red Hat (thunderbird), Slackware (expat), SUSE (curl), and Ubuntu (apache2).
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[$] Maintainers Summit topics: pull depth, hardware vulnerabilities, etc.

화, 2019/09/17 - 2:57오후
The final sessions at the 2019 Linux Kernel Maintainers Summit covered a number of relatively quick topics, including the "pull depth" for code going into the mainline, the handling of hardware vulnerabilities, the ABI status of tracepoints, and more.
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Richard Stallman resigns from the FSF

화, 2019/09/17 - 2:39오후
With a brief announcement, the Free Software Foundation has let it be known that founder Richard Stallman has resigned both as president and from the board of directors. "The board will be conducting a search for a new president, beginning immediately. Further details of the search will be published on fsf.org".
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[$] Linus Torvalds on the kernel development community

화, 2019/09/17 - 2:22오전
The Linux Kernel Maintainers Summit is all about the development process, so it is natural to spend some time on how that process is working at the top of the maintainer hierarchy. The "is Linus happy?" session during the 2019 summit revealed that things are working fairly well at that level, but that, as always, there are a few things that could be improved.
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Stable kernel updates

월, 2019/09/16 - 11:35오후
Stable kernels 5.2.15, 4.19.73, 4.14.144, 4.9.193, and 4.4.193 have been released. They all contain important fixes and users should upgrade.
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Security updates for Monday

월, 2019/09/16 - 11:27오후
Security updates have been issued by Debian (ansible, faad2, linux-4.9, and thunderbird), Fedora (jbig2dec, libextractor, sphinx, and thunderbird), Mageia (expat, kconfig, mediawiki, nodejs, openldap, poppler, thunderbird, webkit2, and wireguard), openSUSE (buildah, ghostscript, go1.12, libmirage, python-urllib3, rdesktop, and skopeo), SUSE (python-Django), and Ubuntu (exim4, ibus, and Wireshark).
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