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Phoronix

3mdeb Gets More Bits Of AMD openSIL & Coreboot Working On Ryzen AM5 Motherboard

There are two exciting initiatives taking place simultaneously by the 3mdeb consulting firm: the open-source developers are working on an open-source firmware stack for a Gigabyte EPYC server motherboard and they are also working on a similar Coreboot + AMD openSIL port to a Ryzen AM5 consumer motherboard, the MSI PRO B850-P WiFi. While not yet ready for end-users, 3mdeb published their latest blog post to highlight their latest milestone achieved with the openSIL + Coreboot bring-up on the MSI PRO B850-P motherboard...

Phoronix

CPPC v4 Support Being Worked On NVIDIA For The Linux ACPI Driver

Last year with the ACPI 6.6 specification release came revised Collaborative Processor Performance Control (CPPC) support for enhancing the capabilities around this standard for OS management of the performance of CPU cores using an abstract performance scale. That CPPC v4 support is now being worked on for the acpi_cppc Linux driver by NVIDIA engineers...

OMG! Ubuntu

You can run Ubuntu on your PS5 (and play Steam games)

Someone has hacked their PlayStation 5 to run Ubuntu 26.04 LTS and used it to play GTA V Enhanced on Steam at a smooth 60fps at 1440p – and now you can too. The feat was pulled off by security engineer Andy Nguyen, who announced a public release of his ps5-linux project this week to more people can turn their “…PS5 Phat console on 3.xx and 4.xx [Firmware] into a fully functional Linux PC gaming device”. Obviously, this is all unofficial. The project exploits a patched hypervisor vulnerability to give Linux direct access to the PS5’s hardware – which with its […]

LWN.net

[$] LWN.net Weekly Edition for April 30, 2026

Inside this week's LWN.net Weekly Edition: Front: Famfs; Python packaging council; Zig concurrency; pages and folios; Strawberry music manager; 7.1 merge window. Briefs: GnuPG 2.5.19; Copy Fail; Plasma security; Fedora 44; Ubuntu 26.04; Niri 26.04; pip 26.1; RIP Seth Nickell; RIP Tomáš Kalibera; Quotes; ... Announcements: Newsletters, conferences, security updates, patches, and more.

LWN.net

A security bug in AEAD sockets

Security analysis firm Xint has disclosed a security bug in the Linux kernel that allows for arbitrary 4-byte writes to the page cache, and which has been present since 2017. The vulnerability has been fixed in mainline kernels. A proof-of-concept script demonstrates how to use the flaw to corrupt a setuid binary, which works on multiple distributions, by requesting an AEAD-encrypted socket from user space and splicing a particular payload into it. A supplemental blog post gives more details about the discovery and remediation. A core primitive underlying this bug is splice(): it transfers data between file descriptors and pipes without copying, passing page cache pages by reference. When a user splices a file into a pipe and then into an AF_ALG socket, the socket's input scatterlist holds direct references to the kernel's cached pages of that file. The pages are not duplicated; the scatterlist entries point at the same physical pages that back every read(), mmap(), and execve() of tha

OMG! Ubuntu

Enabling Ubuntu Pro in Security Center is a Cinch

Canonical made it easier to opt-in to additional security coverage in Ubuntu 26.04 LTS, by adding Ubuntu Pro settings to its desktop Security Center application – and it works great. The range of options is the same as in Software & Updates > Ubuntu Pro tab – that app is no longer preinstalled in 26.04 – but the presentation and layout is less cramped. More room is available for concise explanations of the settings and switches. Click to enable Ubuntu Pro and use the ‘enable with Ubuntu One account’ option to authenticate via your web browser. If you have an […]