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linux-kernel
6 postsbfdd vs XDP-based BFD Fast Path Under CPU Stress: 44 vs 0 Flaps
Under CPU stress, FRR's bfdd flapped 44 times in 120 seconds while an XDP-based BFD fast path stayed at zero flaps, matching line-card-level reliability.
bfdebpfxdpnetworkingJanuscape: 16-Year-Old UAF in KVM Shadow MMU Crashes Hosts
CVE-2026-53359 (Januscape) is a 16-year-old UAF in KVM's shadow paging code enabling guest-to-host escape; the public PoC reliably panics the host, disrupting all co-located VMs.
kvmvirtualizationlinux-kernelcveHow the Linux kernel's iomap layer works
An LWN deep dive explains how the Linux kernel's iomap layer maps files to storage, replacing buffer heads and cutting filesystem boilerplate code.
linux-kernelfilesystemsiomapstorageHow GitHub Uses eBPF to Block Circular Dependencies in Deployments
GitHub explains how it uses eBPF to detect and block circular dependencies caused by hosting its own source code, using cGroup-based network filtering and a DNS proxy.
ebpfgithublinux-kerneldevopsAlice Ryhl on Rust: why the compiler is the real safety net
Google's Alice Ryhl unpacks Rust's memory safety, ownership model, Cargo, editions, and its growing role inside the Linux kernel in this podcast deep dive.
rustprogramming-languagesmemory-safetylinux-kernelJanuscape: KVM/x86 Guest-to-Host Escape Flaw (CVE-2026-53359)
Januscape (CVE-2026-53359) is a critical KVM/x86 guest-to-host escape flaw in the shadow MMU, dormant for 16 years and exploitable on both Intel and AMD.
kvmvirtualizationlinux-kernelcve