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Security updates have been issued by AlmaLinux (bind and libyang), Debian (keystone and openssl), Fedora (mingw-objfw, objfw, sentencepiece, and tailscale), Mageia (packagekit and suricata), Oracle (bind, bind9.16, go-toolset:ol8, ImageMagick, kernel, samba, and vim), SUSE (apache-commons-lang3, apache-commons-text, apache-commons- configuration2, apache-commons-cli, apache-commons-io, apache-commons-codec, avahi, busybox, chromedriver, chromium, csync2, firewalld, frr, gleam, helm, kernel-devel, keybase-client, libmozjs-140-0, libopenvswitch-3_7-0, libsoup, memcached, mutt, openjpeg2, ovmf, perl-HTML-Parser, perl-Net-CIDR-Set, perl-Protocol-HTTP2, postgresql-jdbc, postgresql17, python-CairoSVG, python-Flask, python-pip, python-pyOpenSSL, python-python-multipart, python-Twisted, python-urllib3, python-urllib3_1, python-uv, python311, rsync, tomcat, and tree-sitter), and Ubuntu (alsa-lib, cups, inetutils, isc-kea, jpeg-xl, libnet-cidr-lite-perl, netatalk, netty, nginx, node-shell-quote, php-twig, pillow, poppler, rsync, strongswan, systemd, and transmission).

Heise is carrying a report from the Linux App Summit, held in Berlin in May.

The slightly more than a dozen talks were symbolically framed between the opening keynote by systemd creator Lennart Poettering and the closing talk by Jorge Castro, initiator of the Universal Blue project, from which the modern Linux systems Bluefin and Bazzite emerged. Both Castro and Poettering call for a fundamental rethink of how Linux operating systems are delivered but pursue different approaches.

Greg Kroah-Hartman has announced the release of the 7.0.12, 6.18.35, and 6.12.93 stable kernels. Each contains important fixes throughout the tree. Users are advised to upgrade.

Researchers say mysterious, seconds-long GPS interference bursts detected across Europe appear to come from Russian EKS early-warning satellites, making this "a rare example of human-made GPS interference coming from space," reports Ars Technica. The signals may be tests of space-based jamming capability, short satellite communications, or something else, but experts say they raise troubling questions about whether GPS disruption could eventually be weaponized on a continental scale. From the report: The discovery came from an investigation detailed in a June 2 preprint paper by Todd Humphreys and his student Zach Clements at The University of Texas at Austin, along with Argyris Krizise at Stanford University in California. By sifting through public data from ground-based stations with global navigation satellite system (GNSS) receivers, they identified a pattern of high-powered interference lasting less than 10 seconds each time but simultaneously detectable by ground stations across Europe from Norway to Spain to Poland, and even reaching as far west as Greenland and Canada. By analyzing the ground station data from January 2019 to April 2026, the researchers found 75 days with at least one widespread GNSS interference event overlapping with the GPS L1 frequency band centered on 1575.42 megahertz. That represents the main band used for signal transmission by the US-made GPS satellite constellation and GNSS constellations from other countries. Such interference patterns happened mostly on Tuesdays, Wednesdays, and Thursdays during business hours in Europe, Humphreys told the YouTube channel Veritasium. Because such "continental-scale" interference was simultaneously affecting GPS receivers across Europe and beyond, Humphreys and his colleagues calculated that the source had to be at least 1,200 kilometers above the Earth. [...] In the Veritasium video, Humphreys speculated that the Russians may have been testing the satellites' GPS interference capabilities only briefly on a neighboring frequency adjacent to the typical GPS band. "And then in the eventual future when there is a hot conflict, they go ahead and tune their transmitter down to the GPS band, but it's much more damaging now that it lies right on that band," he said. Incidentally, the raw data also revealed a second interference burst from the Russian satellites in a lower-frequency band used by China's BeiDou navigation system. "I can no longer say this is accidental with confidence," Humphreys told Veritasium. He also described the Russian satellites' quiet demonstration as a "massive escalation in the electronic warfare background conflict that is going on right now." Richard Bowden, division head of assured and resilient PNT at the multinational technology company GMV in Spain, wrote in a LinkedIn comment: "These signals are, without a doubt, intentional and placed on or around GNSS signals, and have the potential to disrupt legitimate use of GNSS services. But from our side at least, we can't be sure they are intentionally malicious or intended as an EW [electronic warfare] weapon."

Read more of this story at Slashdot.

A battery researcher's investigation, backed by more than 20 independent experts, claims Donut Lab's much-hyped "solid-state" battery is actually a conventional lithium-ion cell, with voltage curves and expansion data matching high-nickel NCM chemistry rather than the promised sodium-ion solid-state design. Electrek reports the company raised about $25 million from more than 1,300 mostly small investors on claims of 400 Wh/kg energy density, 100,000-cycle life, and 5-minute charging that now appear unsupported. From the report: The investigation consulted over 20 independent battery experts, including Julian Zanau from the Fraunhofer Research Institute, Dr. Yahim San from Justus-Liebig University, Tom Bicha from Leona, and Dr. Yuo Hesca from Seinajoki University of Applied Sciences. Every single one confirmed the tested cell is lithium-ion. There are two key pieces of evidence. First, the voltage curves from VTT testing match high-nickel lithium-ion cells (NCM chemistry). The cell sits at 3.7-3.8 volts at 50% state of charge -- right where lithium-ion cells operate. Sodium-ion cells don't go significantly past 3.5 volts at 50% SOC. The second piece of evidence is even more damning: VTT's cell expansion data. When a battery charges, ions squeeze into the anode material, causing it to expand in a predictable pattern. A graphite anode produces a distinctive "kink" in the expansion curve around 50-70% state of charge, caused by how ions reorder themselves in graphite's layered structure. The Donut Lab cell shows exactly that kink. This is critical because sodium ions are physically too large to fit into graphite layers. The graphite anode signature proves the cell uses lithium ions. The investigation puts it well: "it's like we have a slightly noisy fingerprint and a picture of the suspect's face. And yet again, it's a match." The calculated energy density? About 298 Wh/kg -- what you'd expect from a good lithium-ion cell, not the 400 Wh/kg claimed. The investigation reveals that the battery technology traces back to CT Coatings, a German company with an "eclectic" array of patents -- including inventions for screen-printed paving slabs, menu folders, and warning triangles. CT Coatings promised Nordic Nano and Donut Lab a screen-printed sodium-ion solid-state battery. What it delivered was a lithium-ion pouch cell.

Read more of this story at Slashdot.