Andrew Tridgell has announced the release of rsync 3.4.4 with fixes for the regressions introduced in the 3.4.3 release. He also notes there will be an rsync 3.5.0 soon, with many more security updates:

As part of the 3.5.0 release update I have created a rsync-security@lists.samba.org mailing list for anyone who is willing to do testing of the 3.5.0 release. The idea is to try to reduce the chance of more regressions by expanding the set of testers of this release. I have seeded it with people who were involved in past rsync security issues. If you want to join this list then the easiest way would be for you to be vouched for by someone on the distros@vs.openwall.org list or someone else I already trust.

My apologies for the regressions in the 3.4.3 release and I hope future security updates for rsync will have less issues. The greatly expanded test suite in rsync 3.5 combined with the rsync-security mailing list should help.

Version 4.0.13 of Ruby's Bundler package-manager has added dependency cooldowns in order to help mitigate the effect of supply-chain attacks:

Most supply-chain attacks against RubyGems exploit a narrow window: an account is compromised, a malicious version ships, and any bundle install in the minutes that follow resolves straight to it. Bundler 4.0.13 introduces cooldown, a time-based filter that refuses to resolve to a version until it has been public for at least N days. Releases too new to have been scrutinized are passed over in favor of ones that have aged past the window.

The feature was designed in the open, drawing on how other ecosystems approach the same problem. It is opt-in, and complements rather than replaces existing defenses like mandatory 2FA and trusted publishing.

LWN covered dependency cooldowns in April, and the takeover of RubyGems and Bundler in October 2025.

The EFF has a blog post looking at a new bill in California that would exempt open-source operating systems from the Digital Age Assurance Act passed last year, but has problems of its own:

While the open source exemption, if passed, would improve the law, the remaining amendments proposed by AB 1856 would require all web browsers and websites to request and collect users' ages. This is an expansion of last year's AB 1043's age-bracketing system that compounds its constitutional harms to users' speech, privacy, and security.

[...] EFF understands this amendment to exempt open-source operating systems from the requirement to collect and transmit users' age-bracket data. That is a definite win for open-source developers. The bill is narrower now than it was before, and lawmakers clearly responded to concerns raised by EFF and the broader open-source community.

Some important questions still remain—for example, it is unclear how the law would apply when an open-source operating system is incorporated into a commercial product or service. And, given the structure of where the exemption is placed under the "operating system provider" definition, lawmakers could stand to clarify that the exemption applies to open-source operating systems and applications.

LWN covered California's age-attestation law in March.

• Front: MeshCore; x32 ABI; Open-source security; Package-manager metadata; More LSFMM+BPF coverage; Loadable crypto module.
• Briefs: Lightwell; jqwik protestware; RedHat package compromise; DistroWatch; Fedora election; Rust 1.96.0; rsync; Vim Classic 8.3; Quotes; ...
• Announcements: Newsletters, conferences, security updates, patches, and more.

Over time, many open-source maintainers face the same problem: they lack the time to do all of the work that their project needs, and no one else is stepping up to provide adequate help. Maintainers, though, are often reluctant to throw in the towel. The result is suboptimal all around; the maintainer is stressed out, project quality suffers, and users face security risks that they may not be fully aware of. At the 2026 Open Source Summit North America, Robin Bender Ginn spoke about this problem, when it might be time for maintainers to pass the torch, and the responsibilities of users.

Andrew Tridgell has written a blog post responding to complaints that he has begun using LLM tools in his work maintaining rsync:

Like many developers of open source packages I've been hit by a flood of security reports lately in my role as the rsync maintainer. Many of those reports are AI generated (not all though, there are some notable ones with very careful and high quality manual analysis).

As this flood started to get more intense I realised I needed to raise the defences on rsync a lot — we needed much more thorough test suites, code coverage analysis, CI testing on a lot more platforms, deliberate and thorough scanning for possible security issues (so I find at least some of them before other people!) and the addition of a whole lot of defence-in-depth hardening techniques.

[...] Now to the future, because we're not done yet by a long shot. The security reports keep rolling in. I'm working on a bunch of CVEs right now. Luckily I've been joined by some other very good developers with great systems development skills and security knowledge. Some of these people came to my attention partly because of all the rage happening at the moment, so I get some rage storm clouds have silver linings. Watch out for some credits for some great new rsync developers in the next release.

Package managers for operating systems and programming languages have been around for decades. Each package manager, and its accompanying packaging format, has been shaped by the needs of its respective ecosystem, but there is a growing need to make use of package metadata for more than software management: for example, in vulnerability scans, software bills of materials (SBOMs), and more. On May 19, Damián Vicino spoke at the Open Source Summit North America 2026 about his experiences in the past year trying to make sense of the varied metadata provided by more than 20 package managers.

Version 8.3 of Vim Classic has been released. This is the first release of the Vim fork since the project was announced in March.

This release is based on Vim 8.2.0148, with a number of bug fixes and patches conservatively backported from future versions of Vim upstream. We elected to clean up this version of Vim, prepare it for a release, and imagine an alternate history where Vim 8.3 was released without Vim9 script. The result is Vim Classic 8.3. We chose to take this approach in order to reduce the long-term maintenance burden of Vim Classic, acknowledging that our fork lacks the resources and institutional knowledge available to Vim upstream. However, a consequence is that there are some Vim plugins which are not compatible with Vim Classic.

We have made a special effort to assess patches from Vim upstream which mitigate some of the many CVEs affecting Vim which were discovered and fixed between versions 8.2 and modern-day Vim, but we can't be sure we've got all of the security patches which are applicable to Vim Classic (and practically exploitable). This version of Vim Classic is therefore recommended for early adopters who are comfortable adopting a security posture which accounts for the fact that we may have overlooked some bugs.

LWN covered Vim Classic and another Vim fork, EVi, in April.

Greg Kroah-Hartman has announced the release of the 7.0.11, 6.18.34, 6.12.92, 6.6.142, 6.1.175, 5.15.209, and 5.10.258 stable kernels. As usual, each contains important fixes throughout the tree, including a fix for the "CIFSwitch" vulnerability (CVE-2026-46243) which could allow a local-privilege-escalation exploit. Users are advised to upgrade.

StepSecurity is reporting that a number of npm packages in the @redhat-cloud-services scope include malware that runs automatically on every npm install:

The payload is a multi-stage credential harvester that sweeps GitHub Actions secrets along with AWS, GCP, Azure, Kubernetes, HashiCorp Vault, npm, and CircleCI tokens, and it is purpose-built to evade detection, including an explicit attempt to bypass StepSecurity Harden-Runner.

StepSecurity analyzed @redhat-cloud-services/host-inventory-client@5.0.3 in full. Its index.js, executed at install time, is 4.2 MB, a file that should weigh a few kilobytes, with the real payload buried under three separate layers of obfuscation. The malware is also a self-propagating worm: using stolen npm tokens and npm's bypass_2fa parameter, it republishes backdoored versions of other packages on its own, even against accounts protected by two-factor authentication, so every infected machine can seed the next wave with no attacker involvement. All affected packages were published via GitHub Actions OIDC from the RedHatInsights/javascript-clients repository, indicating the upstream CI/CD pipeline itself was compromised. Analysis of the remaining packages is ongoing.

A blog post from SafeDep has additional analysis about the incident. We did not find an advisory from Red Hat on this yet.

The Fedora Project has published interviews with candidates running for the open seats on the Fedora Council, Fedora Engineering Steering Committee, Fedora Mindshare Committee, and EPEL Steering Committee. Voting is open through Friday, June 12 at 23:59 UTC.

Andrew Nesbitt has written a blog post detailing a recent incident with the jqwik library for property-based testing in Java. On May 25, the 1.10.0 release of jqwik included a change that attempts to instruct coding agents to disregard previous instructions and delete jqwik tests and code.

I think this is a new class of supply-chain input worth keeping an eye on, mostly because of how little of the existing tooling has any opinion about it. A System.out.print of sixty-eight bytes of plain ASCII isn't the kind of thing scanners are looking for, since those watch for install hooks, network calls, filesystem writes, obfuscated strings and the like. The jar makes the same syscalls it made in 1.9, and because the change was committed and released by the legitimate maintainer through the normal build, it's clean from a SLSA point of view too: the provenance is what it should be. Anyone who reads the diff can see what it does, but a patch bump of a test-scoped dependency is not where most projects spend their review time.

Gentoo developer Michał Górny has written a lengthy article explaining the philosophy and purpose of the Gentoo Linux distribution, in response to a thread on Mastodon:

Gentoo is a source-first distribution, which means the primary method of installing software is to build it from source. Of course, that doesn't mean manually building stuff, following some kind of how-to: finding all the dependencies, installing them manually, going through a series of magical incantations, and eventually ending up no better than if we were installing a binary package. The package manager takes care of all the necessary steps and more, making package installs easy; well, at least unless something fails. But I'm digressing...

[...] We try to build a friendly and welcoming community around Gentoo, and we truly want using Gentoo be an enjoyable experience. We want it to be a system that doesn't betray you.