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Reçu hier — 30 mai 2025LWN

[$] Out of Pocket and into the wallabag

Par :jzb
30 mai 2025 à 12:52

Mozilla has decided to throw in the towel on Pocket, a social-bookmarking service that it acquired in 2017. This has left many users scrambling for a replacement for Pocket before its shutdown in July. One possible option is wallabag, a self-hostable, MIT-licensed project for saving web content for later reading. It can import saved data from services like Pocket, share content on the web, export to various formats, and more. Even better, it puts users in control of their data long-term.

Security updates for Friday

Par :daroc
30 mai 2025 à 12:18
Security updates have been issued by AlmaLinux (.NET 8.0, .NET 9.0, firefox, ghostscript, gstreamer1-plugins-bad-free, libsoup3, mingw-freetype, perl, ruby, sqlite, thunderbird, unbound, valkey, and xz), Debian (chromium, firefox-esr, libavif, linux-6.1, modsecurity-apache, mydumper, systemd, and thunderbird), Fedora (coreutils, dnsdist, docker-buildx, maturin, mingw-python-flask, mingw-python-flit-core, ruff, rust-hashlink, rust-rusqlite, and thunderbird), Red Hat (pcs), SUSE (augeas, brltty, brotli, ca-certificates-mozilla, dnsdist, glibc, grub2, kernel, libsoup, libsoup2, libxml2, open-vm-tools, perl, postgresql13, postgresql15, postgresql16, postgresql17, python-cryptography, python-httpcore, python-h11, python311, runc, s390-tools, slurm, slurm_20_11, slurm_22_05, slurm_23_02, slurm_24_11, tomcat, and webkit2gtk3), and Ubuntu (linux-aws).
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[$] The first half of the 6.16 merge window

Par :daroc
29 mai 2025 à 20:27

As of this writing, 5,546 non-merge changesets have been pulled into the mainline kernel repository for the 6.16 release. This is a bit less than half of the total commits for 6.15, so the merge window is well on its way. Read on for our summary of the first half of the 6.16 merge window.

[$] Block-layer bounce buffering bounces out of the kernel

Par :corbet
29 mai 2025 à 18:23
As the end of the 1990s approached, a lot of kernel-development effort was going into improving support for 32-bit systems with shockingly large amounts of memory installed. This being the 1990s, having more than 1GB of memory in such a system was deemed to be shocking. Many of the compromises made to support such inconceivably large systems have remained in the kernel to this day. One of those compromises — bounce buffering of I/O requests in the block layer — has finally been eased out for the 6.16 release, more than a quarter-century after its introduction.

Local vulnerabilities in Kea DHCP

Par :jzb
29 mai 2025 à 17:07

The SUSE Security Team has published a detailed report about security vulnerabilities it discovered in the Kea DHCP server suite from the Internet Systems Consortium (ISC).

Since SUSE is also going to ship Kea DHCP in its products, we performed a routine review of its code base. Even before checking the network security of Kea, we stumbled over a range of local security issues, among them a local root exploit which is possible in many default installations of Kea on Linux and BSD distributions. [...]

This report is based on Kea release 2.6.1. Any source code references in this report relate to this version. Many systems still ship older releases of Kea, but we believe they are all affected as well by the issues described in this report.

The report details seven security issues including local-privilege-escalation and arbitrary file overwrite vulnerabilities. Security fixes for the vulnerabilities have been published in all of the currently supported release series of Kea: 2.4.2, 2.6.3, and the 2.7.9 development release were all released on May 28. Kea has assigned CVE-2025-32801, CVE-2025-32802, and CVE-2025-32803 to the vulnerabilities. Note that some of the CVEs cover multiple security flaws.

Security updates for Thursday

Par :jake
29 mai 2025 à 13:36
Security updates have been issued by AlmaLinux (kernel and kernel-rt), Debian (firefox-esr, libvpx, net-tools, php-twig, python-tornado, setuptools, varnish, webpy, yelp, and yelp-xsl), Fedora (xen), Mageia (cimg and ghostscript), Oracle (gstreamer1-plugins-bad-free, kernel, libsoup, thunderbird, and unbound), Red Hat (firefox, mingw-freetype and spice-client-win, pcs, and varnish:6), Slackware (curl and mozilla), SUSE (apparmor, containerd, dnsdist, go1.23-openssl, go1.24, gstreamer-plugins-bad, ImageMagick, jetty-minimal, python-tornado, python313-setuptools, s390-tools, thunderbird, tomcat10, ucode-intel, and wxWidgets-3_2), and Ubuntu (ffmpeg, krb5, libsoup3, libsoup2.4, linux-aws-5.4, linux-aws-fips, linux-fips, linux-oracle-6.8, net-tools, and python-setuptools, setuptools).

[$] LWN.net Weekly Edition for May 29, 2025

Par :corbet
29 mai 2025 à 03:55
Inside this week's LWN.net Weekly Edition:

  • Front: Glibc security; How we lost the Internet; Encrypted DNS; 6.15 Development statistics; Filesystem stress-testing; BPF verifier; Network access from BPF; OSPM 2025.
  • Briefs: AlmaLinux 10.0; FESCo decision overturned; NixOS 25.05; Pocket, Launchpad retired; Quotes; ...
  • Announcements: Newsletters, conferences, security updates, patches, and more.

[$] Glibc project revisits infrastructure security

Par :jzb
28 mai 2025 à 16:41

The GNU C Library (glibc) is the core C library for most Linux distributions, so it is a crucial part of the open-source ecosystem—and an attractive target for any attackers looking to carry out supply-chain attacks. With that being the case, securing the project's infrastructure using industry best practices and improving the security of its development practices are a frequent topic among glibc developers. A recent discussion suggests that improvements are not happening as quickly as some would like.

[$] Allowing BPF programs more access to the network

Par :daroc
28 mai 2025 à 15:33

Mahé Tardy led two sessions about some of the challenges that he, Kornilios Kourtis, and John Fastabend have run into in their work on Tetragon (Apache-licensed BPF-based security monitoring software) at the Linux Storage, Filesystem, Memory Management, and BPF Summit. The session prompted discussion about the feasibility of letting BPF programs send data over the network, as well as potential new kfuncs to let BPF firewalls send TCP reset packets. Tardy presented several possible ways that these could be accomplished.

[$] System-wide encrypted DNS

Par :jzb
28 mai 2025 à 13:55

The increasing sophistication of attackers has organizations realizing that perimeter-based security models are inadequate. Many are planning to transition their internal networks to a zero-trust architecture. This requires every communication on the network to be encrypted, authenticated, and authorized. This can be achieved in applications and services by using modern communication protocols. However, the world still depends on Domain Name System (DNS) services where encryption, while possible, is far from being the industry standard. To address this we, as part of a working group at Red Hat, worked on fully integrating encrypted DNS for Linux systems—not only while the system is running but also during the installation and boot process, including support for a custom certificate chain in the initial ramdisk. This integration is now available in CentOS Stream 9, 10, and the upcoming Fedora 43 release.

Security updates for Wednesday

Par :jzb
28 mai 2025 à 13:04
Security updates have been issued by AlmaLinux (gstreamer1-plugins-bad-free and kernel), Arch Linux (bind and varnish), Debian (glibc and syslog-ng), Fedora (microcode_ctl, mozilla-ublock-origin, nodejs20, and nodejs22), Mageia (firefox, nss, rootcerts, open-vm-tools, sqlite3, and thunderbird), Oracle (gstreamer1-plugins-bad-free, kernel, libsoup, nodejs:22, php, php:8.2, php:8.3, python-tornado, redis, and redis:7), Red Hat (libsoup, pcs, and python-tornado), Slackware (mozilla), SUSE (bind, dnsdist, elemental-operator, govulncheck-vulndb, gstreamer-plugins-bad, jetty-annotations, jq, libnss_slurm2, libyelp0, mariadb, nvidia-open-driver-G06-signed, prometheus-blackbox_exporter, python-h11, python-httpcore, python-setuptools, python312, python39-setuptools, screen, sqlite3, umoci, and webkit2gtk3), and Ubuntu (cifs-utils, glibc, linux-aws, linux-intel-iotg-5.15, linux-nvidia-tegra-igx, linux-raspi, linux-aws-fips, linux-hwe-6.8, linux-lowlatency, linux-lowlatency-hwe-6.11, linux-oracle, linux-raspi, linux-raspi-5.4, and net-tools).

AlmaLinux OS 10.0 released

Par :corbet
27 mai 2025 à 22:45
Version 10 of the AlmaLinux OS distribution has been released.

The goal of AlmaLinux OS is to support our community, and AlmaLinux OS 10 is the best example of that yet. With an unwavering eye on maintaining compatibility with Red Hat Enterprise Linux (RHEL), we have made small improvements to AlmaLinux OS 10 that target specific sections of our userbase.

See the release notes for details.

[$] Verifying the BPF verifier's path-exploration logic

Par :daroc
27 mai 2025 à 19:15

Srinivas Narayana led a remote session about extending Agni to prove the correctness of the BPF verifier's handling of different execution paths as part of the Linux Storage, Filesystem, Memory Management, and BPF Summit. The problem of ensuring the correctness of path exploration is much more difficult than the problem of ensuring the correctness of arithmetic operations (which was the subject of the previous session), however. Narayana's plan to tackle the problem makes use of a mixture of specialized techniques — and may need some assistance from the BPF developers to make it feasible at all.

[$] Cory Doctorow on how we lost the internet

Par :jake
27 mai 2025 à 14:57
Cory Doctorow wears many hats: digital activist, science-fiction author, journalist, and more. He has also written many books, both fiction and non-fiction, runs the Pluralistic blog, is a visiting professor, and is an advisor to the Electronic Frontier Foundation (EFF); his Chokepoint Capitalism co-author, Rebecca Giblin, gave a 2023 keynote in Australia that we covered. Doctorow gave a rousing keynote on the state of the "enshitternet"—today's internet—to kick off the recently held PyCon US 2025 in Pittsburgh, Pennsylvania.

Security updates for Tuesday

Par :corbet
27 mai 2025 à 12:54
Security updates have been issued by AlmaLinux (gstreamer1-plugins-bad-free, libsoup, and python-tornado), Debian (libavif and pgbouncer), Red Hat (gstreamer1-plugins-bad-free, mingw-freetype and spice-client-win, and webkit2gtk3), SUSE (firefox, govulncheck-vulndb, and python310-setuptools), and Ubuntu (flask, intel-microcode, openjdk-17-crac, tika, and Tomcat).

[$] Development statistics for the 6.15 kernel

Par :corbet
26 mai 2025 à 16:04
The 6.14 kernel development cycle only brought in 11,003 non-merge changesets, making it the slowest cycle since 4.0, which was released in 2015. The 6.15 kernel, instead, brought in 14,612 changesets, making it the busiest release since 6.7, released at the beginning of 2024. The kernel development process, in other words, is back up to full speed. The 6.15 release happened on May 25, so the time has come for the obligatory look at where the changes in this release came from.
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