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PC / Tech. > LWN.net
jeudi 10 avril 2025, 02:33
Inside this week's LWN.net Weekly Edition: Front: Debian project leader election; 6.15 Merge window; Lots of LSFMM coverage; Joplin. Briefs: Firefox hardening; OpenSSH 10.0; Supply chain security; FreeDOS 1.4; OpenSSL 3.5.0; Rust 1.86.0; Quotes;... Announcements:...
mercredi 9 avril 2025, 20:00
Tom Schuster, Frederik Braun, and Christoph Kerschbaumer have published an article on the Firefox Security team's Attack & Defense blog that explains recent work to harden Firefox's frontend code. We have rewritten over 600 JavaScript event handlers to mitigate XSS and...
In a combined storage and filesystem track session at the 2025 Linux Storage, Filesystem, Memory Management, and BPF Summit, John Garry continued the theme of 'untorn' (or atomic) writes that started in the previous session. It was also an update on where things have gone...
Four candidates have stepped up to run in the 2025 Debian Project Leader (DPL) election. Andreas Tille, who is in his first term as DPL, is running again. Sruthi Chandran, Gianfranco Costamagna, and Julian Andres Klode are the other candidates running for a chance to serve a ...
The 6.15 merge window saw the inclusion of a new type of lock for BPF programs: a resilient queued spinlock that Kumar Kartikeya Dwivedi has been working on for some time. Eventually, he hopes to convert all of the spinlocks currently used in the BPF subsystem to his new...
Linus Torvalds released 6.15-rc1 and closed the 6.15 merge window on April 6. By that time, 12,633 non-merge changesets had found their way into his repository; that is substantially more than were merged during the entire 6.14 development cycle. Just under 6,000 of those...
Tiered-memory systems feature multiple types of memory with varying performance characteristics; on such systems, good performance depends on keeping the most frequently used data in the fastest memory. Identifying that data and placing it properly is a challenge that has...
The kernel samepage merging (KSM) subsystem works by finding pages in memory with the same contents, then replacing the duplicated copies with a single, shared copy. KSM can improve memory utilization in a system, but has some problems as well. In two memory-management-track ...
OpenSSH 10.0 has been released. Support for the DSA signature algorithm, which was disabled by default beginning in 2015, has been removed. Other notable changes include using the post-quantum algorithm mlkem768x25519-sha256 for key agreement by default, support for...
Security updates have been issued by Debian (lemonldap-ng, libbssolv-perl, and phpmyadmin), Fedora (augeas, mariadb10.11, and thunderbird), Oracle (gimp, libxslt, python3.11, python3.12, tomcat, and xorg-x11-server), Red Hat (expat, grafana, opentelemetry-collector, and...
mardi 8 avril 2025, 21:13
Version 3.5.0 of OpenSSL has been released. This release adds support for server-side QUIC (RFC 9000), a new configuration option (no-tls-deprecated-ec) that disables support for TLS groups deprecated in RFC 8422, and more.
Version 1.4 of FreeDOS has been released. This is the first stable release since 2022, and includes improvements to the Fdisk hard-disk-management program, and reliability updates for the mTCP set of TCP/IP applications for DOS. This version was much smoother because Jerome ...
Joplin is an open-source note-taking application designed to handle taking many kinds of notes, whether it is managing code snippets, writing documentation, jotting down lecture notes, or drafting a novel. Joplin has Markdown support, a plugin system for extensibility, and...
Quite a bit of work has been done in recent years to allow the kernel to make more use of large folios. That progress has not yet reached the handling of text (executable code) areas, though. During the memory-management track of the 2025 Linux Storage, Filesystem,...
The kernel makes extensive use of per-CPU data as a way to avoid contention between processors and improve scalability. Using the same technique in user space is harder, though, since there is little control over which CPU a process may be running on at any given time. That...
Security updates have been issued by AlmaLinux (gimp, libxslt, python3.11, python3.12, and tomcat), Debian (ghostscript and libnet-easytcp-perl), Fedora (openvpn, perl-Data-Entropy, and webkitgtk), Red Hat (python-jinja2), SUSE (giflib, pam, and xen), and Ubuntu (apache2,...
lundi 7 avril 2025, 23:01
Pahole (originally 'Poke-a-hole') is a Swiss Army knife for exploring and editing debug information. Pahole is also currently involved in the kernel's build process to rearrange the information produced by various compilers into a form useful to the BPF verifier, although...
ACM Queue looks at the security problem in the light of a report on Multics security that was published in 1974. We are all struggling with a massive shift that has happened in the past 10 or 20 years in the software industry. For decades, software reuse was only a lofty...
The kernel's swap subsystem is complex and highly optimized — though not always optimized for today's workloads. In three adjacent sessions during the memory-management track of the 2025 Linux Storage, Filesystem, Memory-Management, and BPF Summit, Kairui Song, Nhat Pham,...
The 6.14.1, 6.13.10, 6.12.22, 6.6.86, and 6.1.133 stable kernels have all been released. They contain a relatively small collection of important fixes across the kernel tree.
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