USN-8488-1: Guia Prático de Atualização do Kernel Linux Ubuntu 26.04

 

Atualize o kernel Ubuntu 26.04 contra 70+ CVEs (CVE-2025-54505, CVE-2026-31532...). Guia prático com comandos, automação e validação pós-patch para ambientes críticos.

Rocky Linux 10 Kernel Security Update: RLSA-2026-30129

 

Guia prático para aplicar a atualização crítica do kernel RLSA-2026-30129 no Rocky Linux 10. Comandos reais, troubleshooting e boas práticas para administradores de infraestrutura.

RLSA-2023:2786 – Atualização Moderada de Segurança para o Wayland

 

Atualização de segurança Wayland para Rocky Linux 8 corrige CVE-2021-3782 com overflow de referência no libwayland-server. Procedimento de patch e verificação para ambientes gráficos.

ELSA-2026-29702: Guia Definitivo para Atualizar o runc no Oracle Linux 9

 

Guia prático para aplicar a atualização de segurança ELSA-2026-29702 do runc no Oracle Linux 9, com comandos reais, verificação prévia e pós-atualização, troubleshooting e boas práticas.

RLSA-2026:27354 — Rocky Linux 8 kernel-rt: Atualização Crítica para Ambientes de Tempo Real

Atualize o kernel-rt do Rocky Linux 8 para corrigir 8 CVEs críticas (use-after-free, LPE) e evitar panics no scheduler DEADLINE. Preserve isolcpus, nohz_full e valide a latência pós-reboot.

Erlang no SUSE: Identifique e Corrija Vulnerabilidades de Path Traversal e TLS

 

Aprenda a identificar e corrigir vulnerabilidades de path traversal e TLS no Erlang do SUSE Linux com comandos práticos, script de automação e mitigações alternativas. Um guia perene para administradores de sistemas.

Linux Kernel Security Update Guide for Ubuntu (Based on Recent Advisory)

 

Learn how to check your Ubuntu system for kernel vulnerabilities, apply the fix with a bash script, and use iptables or AppArmor as alternative mitigations when you cannot reboot. Includes real commands and a Raspberry Pi lab setup recommendation.

Ubuntu Kernel Security: How to Fix the AMD EntrySign Microcode Vulnerability (and Stay Secure for Good)

 

Patch a critical AMD Zen CPU microcode flaw (EntrySign, CVE‑2024‑36347) that lets attackers load malicious microcode. Step‑by‑step check commands, full automation script, and alternative AppArmor/iptables mitigations for Ubuntu 22.04 LTS. Keep your kernel secure without waiting for the next news cycle.

The 2026 Guide to Legacy Kernel Driver Modernization: Turning 20-Year-Old Code into a Profit Center

 

Is your legacy industrial or radio infrastructure leaking uptime and profit? This 2026 expert guide reveals the hidden ROI of modernizing 20-year-old Linux kernel drivers. Includes a free ROI estimator and migration checklist.

GNU/Hurd 64-Bit Is Here: A Deep Dive into the Microkernel's Long-Awaited Port and Future SMP Support

 

After decades of development, the GNU Hurd’s 64-bit (x86_64) port is finally a reality, available now via the GNU Guix distribution. This comprehensive analysis explores the current stability of the Hurd on 64-bit architecture, the stark package availability metrics (0.9% vs. Linux), and the roadmap towards SMP support. Discover what this milestone means for operating system diversity and the future of microkernel architecture.

OpenRISC’s Linux 7.0 Leap: FPGA Enablement and the Road to Hardware Democratization

 

Dive deep into the OpenRISC architecture's persistent evolution within the Linux 7.0 kernel. This technical analysis covers new FPGA board support, including the DE0 Nano, SMP kernel fixes, and how this mature ISA compares to RISC-V in the open-source hardware landscape. Explore the implications for embedded development.

GNU/Hurd in 2026: Is the Long-Awaited Microkernel Alternative Finally Viable?

 

Explore the latest advancements in GNU/Hurd for 2026, including enhanced 64-bit and SMP support, improved driver compatibility via NetBSD, and the status of Debian/Guix distributions. Discover how this open-source microkernel is evolving as a Linux alternative.

ReactOS at 30: A Three-Decade Journey Toward a Truly Open-Source Windows-Compatible Operating System

 Celebrating three decades of innovation, ReactOS marks 30 years as an open-source Windows-compatible OS. Explore its historic journey, major milestones, and future roadmap featuring WDDM GPU drivers, UEFI support, and SMP. Discover how this alternative OS platform challenges the status quo. Read our in-depth analysis.

DragonFlyBSD AMDGPU Driver Evolves: Unlocking GCN 1.1 "Sea Islands" Support

 

Explore how DragonFlyBSD's AMDGPU driver now enables optional support for GCN 1.1 "Sea Islands" (CIK) GPUs, a pivotal step in its evolution from the legacy Radeon driver. We analyze its porting strategy, current limitations based on Linux 4.20.17 sources, and the manual configuration required, comparing its progress to upstream Linux kernel development. 

Unleashing Hidden Performance: Linux 6.17's Smarter SMP Call Optimization for HPC & Enterprise

 

Discover how Linux 6.17's key SMP optimization, driven by NVIDIA, enhances HPC & server performance. Learn how smarter NUMA-aware CPU selection in smp_call_function_any() reduces latency & boosts efficiency. Essential reading for Linux sysadmins & performance engineers. Explore the technical details & implications.

Linux 6.15 Kernel Power Regression: Critical Fixes and Performance Implications

 

Linux 6.15 kernel’s CPU power regression fixed in 6.16 Git—details on Intel’s Sierra Forest impact, Rust-based power management upgrades, and how this affects enterprise server performance.

Linux Kernel Drops UP Scheduler: What This Means for Legacy Systems in 2025

 

Linux kernel drops UP scheduler in 2025, favoring SMP unification. Learn how this affects legacy single-core systems, benchmark tradeoffs, and why developers call it a necessary evolution for modern hardware

AMD EPYC Cache Flushing Optimization for SEV-KVM: Boosting Virtualization Performance in Linux 6.17

 

AMD EPYC & Linux 6.17 will optimize SEV-KVM cache flushing, boosting virtualization performance in data centers. Learn how WBNOINVD & targeted flushing reduce latency for cloud hosting and enterprise workloads.

DragonFlyBSD 6.4.1 Released: Key Updates and Bug Fixes for the BSD Operating System

 

DragonFlyBSD 6.4.1 is now available, delivering critical bug fixes and stability improvements for this high-performance BSD OS. Learn what’s new, download links, and why this update matters for developers and enterprise users.

OpenBSD 7.7 Lançado: Melhorias de Desempenho, Segurança e Suporte a Hardware

 

OpenBSD 7.7 foi lançado com melhorias em desempenho ARM64, suporte a AMD SEV, GPUs RDNA4 e Intel Arrow Lake. Ideal para servidores seguros e virtualização. Baixe agora!