~lwn | Bookmarks (336)

Linus has released 6.9-rc5 for testing. But if you ignore those oddities, it all looks pretty normal and things appear fairly calm. Which is just as well, since the first part of the week I was on a quick trip to Seattle, and the second part of the week I've been doing a passable imitation of the Fontana di Trevi, except my medium is...

Gregory Price recently posted a patch set that adds support for weighted memory interleaving — allowing a process's memory to be distributed between non-uniform memory access (NUMA) nodes in a more controlled way. According to his performance measurements, the patch set could provide a significant improvement for computers with network-attached memory. The patch set also introduces new system calls and paves the way for...

Security updates have been issued by AlmaLinux (gnutls, java-17-openjdk, mod_http2, and squid), Debian (firefox-esr), Fedora (editorconfig, perl-Clipboard, php, rust, and wordpress), Mageia (less, libreswan, puppet, and x11-server, x11-server-xwayland, and tigervnc), Slackware (aaa_glibc), and SUSE (firefox, graphviz, kernel, nodejs12, pgadmin4, tomcat, and wireshark).

Gentoo Council member Michał Górny posted an RFC to the gentoo-dev mailing list in late February about banning "'AI'-backed (LLM/GPT/whatever) contributions" to the Gentoo Linux project. Górny wrote that the spread of the "AI bubble" indicated a need for Gentoo to formally take a stand on AI tools. After a lengthy discussion, the Gentoo Council voted unanimously this week to adopt his proposal and ban...

Kernel developers, like conscientious developers for many projects, will often include checks in the code for conditions that are never expected to occur, but which would indicate a serious problem should that expectation turn out to be incorrect. For years, developers have been encouraged (to put it politely) to avoid using assertions that crash the machine for such conditions unless there is truly no...

Security updates have been issued by Debian (firefox-esr, jetty9, libdatetime-timezone-perl, tomcat10, and tzdata), Fedora (cockpit, filezilla, and libfilezilla), Red Hat (firefox, gnutls, java-1.8.0-openjdk, java-17-openjdk, kernel, kernel-rt, less, mod_http2, nodejs:18, rhc-worker-script, and shim), Slackware (mozilla), SUSE (kernel), and Ubuntu (apache2, glibc, and linux-xilinx-zynqmp).

Managing to-do lists is something of a universal necessity. While some people handle them mentally or on paper, others resort to a web-based tool or a mobile application. For those preferring the command line, the MIT-licensed Taskwarrior offers a flexible solution with a healthy community and lots of extensions.

Security updates have been issued by Debian (apache2 and cockpit), Fedora (firefox, kernel, mbedtls, python-cbor2, wireshark, and yyjson), Mageia (nghttp2), Red Hat (kernel, kernel-rt, opencryptoki, pcs, shim, squid, and squid:4), Slackware (firefox), SUSE (emacs, firefox, and kernel), and Ubuntu (linux-aws, linux-aws-5.15, linux-aws-6.5, linux-raspi, and linux-iot).

The recent XZ backdoor has sparked a lot of discussion about how the open-source community links and packages software. One possible security improvement being discussed is changing how projects like systemd link to dynamic libraries that are only used for optional functionality: using dlopen() to load those libraries only when required. This could shrink the attack surface exposed by dependencies, but the approach is...

Fedora 40 Beta was released on March 26, and the final release is nearing completion. So far, the release is coming together nicely with major updates for GNOME, KDE Plasma, and the usual cavalcade of smaller updates and enhancements. As part of the release, the project also scuttled Delta RPMs and OpenSSL 1.1.

Version 0.81 of the PuTTY SSH client is out with a fix for CVE-2024-31497; some users will want to update and generate new keys: PuTTY 0.81, released today, fixes a critical vulnerability CVE-2024-31497 in the use of 521-bit ECDSA keys (ecdsa-sha2-nistp521). If you have used a 521-bit ECDSA private key with any previous version of PuTTY, consider the private key compromised: remove the public...

Security updates have been issued by Debian (php7.4 and php8.2), Fedora (c-ares), Mageia (python-pillow and upx), Oracle (bind and dhcp, bind9.16, httpd:2.4/mod_http2, kernel, rear, and unbound), SUSE (eclipse, maven-surefire, tycho, emacs, kubevirt, virt-api-container, virt-controller-container, virt-exportproxy-container, virt-exportserver-container, virt-handler-container, virt-launcher-container, virt-libguestfs-t, nodejs16, nodejs18, nodejs20, texlive, vim, webkit2gtk3, and xen), and Ubuntu (gnutls28, klibc, libvirt, nodejs, and webkit2gtk).

The Open Source Security Foundation and the OpenJS Foundation have jointly posted a warning about XZ-like social-engineering attacks after OpenJS was seemingly targeted. The OpenJS Foundation Cross Project Council received a suspicious series of emails with similar messages, bearing different names and overlapping GitHub-associated emails. These emails implored OpenJS to take action to update one of its popular JavaScript projects to "address any critical...

Kumar Kartikeya Dwivedi has been working to add support for exceptions to BPF since mid-2023. In July, Dwivedi posted the first patch set in this effort, which adds support for basic stack unwinding. In February 2024, he posted the second patch set aimed at letting the kernel release resources held by the BPF program when an exception occurs. This makes exceptions usable in many...

Security updates have been issued by AlmaLinux (bind, bind and dhcp, bind9.16, gnutls, httpd:2.4/mod_http2, squid:4, and unbound), Debian (kernel, trafficserver, and xorg-server), Fedora (chromium, kernel, libopenmpt, and rust-h2), Mageia (apache-mod_jk, golang, indent, openssl, perl-HTTP-Body, php, rear, ruby-rack, squid, varnish, and xfig), Oracle (bind, squid, unbound, and X.Org server), Red Hat (bind and dhcp and unbound), Slackware (less and php), SUSE (gnutls, python-Pillow, webkit2gtk3, xen,...

The 6.9-rc4 kernel prepatch is out for testing. "Nothing particularly unusual going on this week - some new hw mitigations may stand out, but after a decade of this I can't really call it 'unusual' any more, can I?"

The 6.8.6, 6.6.27, 6.1.86, 5.15.155, 5.10.215, 5.4.274, and 4.19.312 stable kernel updates have all been released; each contains a relatively large number of important fixes.

The kernel project merges dozens of drivers with every development cycle, and almost every one of those drivers is entirely uncontroversial. Occasionally, though, a driver submission raises wider questions, leading to lengthy discussion and, perhaps, opposition. That is currently the case with two separate drivers, both with ties to the networking subsystem. One of them is hung up on questions of whether (and how)...

Dirk Mueller has posted a lengthy analysis of the XZ backdoor on the openSUSE News site, with a focus on openSUSE's response. Debian, as well as the other affected distributions like openSUSE are carrying a significant amount of downstream-only patches to essential open-source projects, like in this case OpenSSH. With hindsight, that should be another Heartbleed-level learning for the work of the distributions. These...

Security updates have been issued by Debian (chromium), Fedora (rust, trafficserver, and upx), Mageia (postgresql-jdbc and x11-server, x11-server-xwayland, tigervnc), Red Hat (bind, bind9.16, gnutls, httpd:2.4, squid, unbound, and xorg-x11-server), SUSE (perl-Net-CIDR-Lite), and Ubuntu (apache2, maven-shared-utils, and nss).

The Earliest Virtual Deadline First (EEVDF) scheduler was merged as an option for the 6.6 kernel. It represents a major change to how CPU scheduling is done on Linux systems, but the EEVDF front has been relatively quiet since then. Now, though, scheduler developer Peter Zijlstra has returned from a long absence to post a patch series intended to finish the EEVDF work. Beyond...

Security updates have been issued by AlmaLinux (kernel, less, libreoffice, nodejs:18, nodejs:20, rear, thunderbird, and varnish), Debian (pillow), Fedora (dotnet7.0), SUSE (sngrep, texlive-specs-k, tomcat, tomcat10, and xorg-x11-server), and Ubuntu (nss, squid, and util-linux).