𝕭𝖆𝖘𝖘𝖕𝖎𝖘𝖙𝖔𝖑 🎬

This panel brings together experts to discuss the practical realities of implementing the CRA steward role, as defined by the regulation, and how organisations are approaching its execution. Panelists will explore how the concept of CRA stewards is being interpreted, what responsibilities are emerging in practice, and the challenges organisations face in preparing for this new function. They will also highlight which elements remain unclear, what support or guidance is still needed, and how future work at the level of EC and broader ecosystem can help refine and operationalise the steward role effectively. The panel aims to offer concrete insights for organisations navigating this evolving responsibility.

speakers: 'Kate Stewart

link: 'https://fosdem.org/2026/schedule/event/FEJGDD-panel_from_minimum_compliance_to_meaningful_stewardship/'

The basic concept of Secure Boot is now well established (and widely used in Linux for nearly 15) years. Most people now decline to take ownership of their systems (by replacing the CA keys in the UEFI db variable) and instead pivot trust away from the UEFI variables to the MoK (Machine Owner Key) ones instead, which can be updated from the operating system. Thus if you want to secure boot your own kernel, you usually create a signing key and load that into MoK.

This talk will go quickly over the history, how you take ownership, what problems you encounter, how you create and install your own signing keys in MoK and how the kernel imports all these keys into the keyring system and uses them (verifying module signatures and IMA signed policy) including the differences betwen the machine and secondary_trusted keyrings. We'll also discuss some of the more recent innovations, like adding SBAT to the rather problematic UEFI revocation story and how it works.

speakers: 'James Bottomley'

link: 'https://fosdem.org/2026/schedule/event/XVLRTK-a_modern_look_at_secure_boot/'

A new RFC for Netfilter/nftables arrived recently in the netfilter-devel mailing list [1], introducing flexible math operation support for network packet fields. This could solve some migration problems from iptables to nftables and in addition empower other use-cases.

This demo will quickly show how it works with simple real-world scenarios.

[1] https://lore.kernel.org/netfilter-devel/[email protected]/

speakers: 'Fernando Fernandez Mancera'

link: 'https://fosdem.org/2026/schedule/event/QBDBLC-nft-math-expression/'

This live demo shows how to pick a real syzbot-reported bug and reproduce it locally in under five minutes using virtme-ng. No disk images, no complex QEMU setup-just build, reproduce and verify the fix. Perfect for anyone who wants to turn kernel fuzzing reports into real patches. Important note: I am going to use pre-built upstream kernel containing a bug due to the talk time constarins. Hovewer, steps to rebuild an upstream kernel and use it in virtme-ng will be described.

Full Description: syzbot continually discovers kernel issues, but reproducing them can be slow or intimidating. In this lightning talk, we'll use virtme-ng to rebuild a mainline kernel and instantly run a real syzbot reproducer inside an ephemeral VM. We'll trigger the crash, inspect the backtrace, apply the upstream fix, and rerun the test to verify the resolution-all live. This workflow reduces setup time from hours to minutes and lowers the entry barrier for new contributors. Every attendee will leave knowing how to reproduce syzbot bugs safely and efficiently on their own system.

Live Experiments & Demonstrations:

Key Points:

speakers: 'Roman "Hedin" Storozhenko'

link: 'https://fosdem.org/2026/schedule/event/99ULYW-repro-linux-kernel-bug-5-min-virtme-ng/'

#loop #shortloop #improvisation #mattiagiovanetti #music #instrumental

This video shows how to create a SelectionSet and use it via a SelectionSetLink to select faces for a FEM-boundary condition.

The aim was to create a volume-based selection of faces or solids in FreeCAD. SelectionSet: define a “selection shape” (e.g. a box, sphere, or PartDesign body), then store which faces or solids of another object lie inside or intersect it as a SelectionSet in the model tree. SelectionSetLink: combine one or more SelectionSets (and/or direct shapes), add and subtract as needed, then apply the result to a FEM constraint, material, or any object with a References property—so you drive FEM geometry from your selections in one place.

https://github.com/HoWilgh/FreeCAD-macros/tree/master/FEM/SelectionSet

This video shows how to install the macro, and how to run a simple demo.

The aim was to create a volume-based selection of faces or solids in FreeCAD. SelectionSet: define a “selection shape” (e.g. a box, sphere, or PartDesign body), then store which faces or solids of another object lie inside or intersect it as a SelectionSet in the model tree. SelectionSetLink: combine one or more SelectionSets (and/or direct shapes), add and subtract as needed, then apply the result to a FEM constraint, material, or any object with a References property—so you drive FEM geometry from your selections in one place.

https://github.com/HoWilgh/FreeCAD-macros/tree/master/FEM/SelectionSet

Hvordan ville det se ud hvis vi ikke var sammen om sundhed, hvis alle med en anden baggrund end dansk forlod vores allesammens sundhedsystem?

I'm inventing the future of music. Assimilate or get left behind 🩵