Omarchy v4.0.4 releases a custom Linux kernel optimized for desktop responsiveness, gaming compatibility, and hardware reliability. The update improves Btrfs performance, power management, and fixes audio, touchpad, display, and startup issues across various systems.
A developer asks about handling eBPF verifier packet pointer tracking limits when dealing with high-volume socket drops, specifically regarding bypassing userspace layer 7 bottlenecks through layer 4 transport splicing techniques.
Gravity Linux is a project using clean-room reverse engineering to bring Linux support to Apple Silicon M4 Macs, with the goal of upstreaming this support into the mainline Linux kernel and other distributions. The team plans to release their first version soon.
A developer has released an early preview of GEFS, a crash-safe copy-on-write file system originally written for 9front, now being ported to OpenBSD. The port is not production-ready and data loss is expected, but remaining issues are understood and the code is available for testing and development.
A security researcher exploited a public Linux kernel bug in Google's kernelCTF challenge by manipulating CPU TLB shootdown behavior to maintain a stale memory mapping, then convinced the kernel to recycle the underlying physical page as a page table, ultimately gaining control to retrieve the flag. The exploit leveraged existing public vulnerability details rather than discovering a new bug.