Por que Ainda Estamos Longe de um Desktop ARM64 Maduro (e Como Escolher Bem)

 

Por que um engenheiro da Red Hat abandonou seu ARM64 de 80 núcleos após 11 meses? Descubra os desafios reais do ARM no desktop e como escolher a arquitetura certa para você.

RLSA-2023:6976 – Guia Definitivo para o Patch do libfastjson: Do Comando à Reinicialização Obrigatória

Atualização crítica libfastjson no Rocky Linux 8: CVE-2020-12762 com integer overflow. Guia prático com comandos, troubleshooting e automação Ansible para infraestrutura segura.

RLSA-2026:28208 — Mitigação de ataques de temporização MD5 no PostgreSQL em Rocky Linux 8

 

Mitigação do CVE-2026-6478 no Rocky Linux 8: ataque de timing em autenticação MD5 do PostgreSQL. Atualização crítica dos módulos pgaudit, pg_repack e decoderbufs. Procedimento completo com DNF.

Dracut no Rocky Linux: Entendendo e Corrigindo a Falha CVE-2026-6893

 

A vulnerabilidade CVE-2026-6893 no dracut permite execução remota de código como root via DHCP em servidores Rocky Linux. Aprenda a verificar, corrigir com script automatizado e aplicar mitigação alternativa mesmo sem atualização imediata. Guia completo para administradores.

Stack Bufferoverflow no no Perl CryptX: Guia Prático para Corrigir de Forma Definitiva

 

Domine o estouro de pilha no Perl CryptX (CVE-2026-41565) com este guia perene. Inclui correção automatizada para Fedora Linux, mitigação alternativa e script para verificar se você está vulnerável. Mantenha sua biblioteca criptográfica segura por anos. Perfeito para sysadmins e engenheiros de segurança.

Proteja seu Firefox no Fedora Contra Vulnerabilidades de Memória (Guia Permanente)

 

Aprenda a verificar, corrigir e automatizar a proteção contra vulnerabilidades de memória no Firefox (Fedora). Script bash, mitigação com iptables/AppArmor e recomendações de livro para aprofundar em segurança Linux. Conteúdo perene para sysadmins.

Como proteger seus dados da falha CVE‑2026‑5119 no libsoup3 (Guia definitivo)

 

Falha no libsoup3 (CVE-2026-5119) expõe cookies em texto claro ao usar proxy HTTP. Aprenda a verificar, corrigir e mitigar o problema no Fedora com comandos práticos, script de automação e medidas alternativas. Guia definitivo para os administradores Linux. 

A Hidden Flaw in Kerberos Authentication & How to Build a Better Defense

 

Stop chasing one-off patches. Learn to fix & fortify your Linux systems for good. This guide delivers Debian commands, mitigation scripts, and a masterclass on building your own security tools for any future threat. 

RHEL 10.2 & 9.8: AI Goose CLI, Key Updates & Business Value (2026)

 

RHEL 10.2 & 9.8 introduce Goose AI CLI, MCP integration, Python 3.14 & more. Cut troubleshooting time & boost productivity. Upgrade guide inside.

How to Check, Fix, and Mitigate a Linux Kernel Local Privilege Escalation on SUSE (Evergreen Commands & Script)

 

CVE-2026-31431 (Copy Fail): Critical SUSE Linux kernel flaw allows local root access. This evergreen guide provides vulnerability checks, a zypper automation script, and mitigation steps (module blacklisting/seccomp) for any user. Protect your servers today.

Master Kernel Security: How to Handle Critical CVEs on Rocky Linux (Even Without an Immediate Patch)

 

Stop chasing CVEs. Learn to permanently check, patch, and mitigate Linux kernel vulnerabilities using real automation scripts. Includes LKRG setup and a book that teaches you to build tools for any future zero-day.

How to Audit & Fix OpenSSH SCP/Rsync Privilege Escalation (Works for Any CVE)

 

Stop patching the same SSH flaws yearly. Learn to audit OpenSSH, block SCP privilege escalation (CVE list), and build your own security scripts. Commands + book inside.

.NET Security: Stop SMTP Injection & Stack Overflows (Works Today & Next Year)

 

Your .NET 8.0 apps might be wide open to SMTP injection and stack overflow attacks. No matter when you read this, here are the exact commands to check, patch, or block CVE-2026-32178 and friends on Ubuntu, Rocky, and SUSE – plus a script to automate the fix.

How to Secure Thunderbird on Linux Against Critical libpng & Firefox Memory Bugs (Works for 2026+)

 

Thunderbird critical: libpng & Firefox memory bugs. Learn to check, patch, or block exploits on Ubuntu/Rocky Linux /SUSE. Includes automation script, iptables mitigation, and affiliate tool to lock down email servers. Read now.

Securing Legacy Linux: A Practical Guide to Python Exploits (Tar, XML, and Browser Injection)

 

Secure your SUSE 12 SP5 servers against Python command injection and XML DoS attacks. Includes step-by-step vulnerability checks, a cross-distro bash fix script, AppArmor mitigation, and a hands-on lab to test CVE-2026-4519 safely in Docker. Master Linux hardening today.

How to Fix Memory Corruption in Go (CVE-2026-27143) – Permanent Security Guide

 

Nine Go vulnerabilities including memory corruption (CVE-2026-27143), crypto/tls deadlocks, and path traversal. Learn to check, patch, and mitigate without updating. Includes automation scripts, Docker lab, and AppArmor rules. Practical SUSE, RHEL, Ubuntu commands.

Critical Corosync Flaw: How to Secure Your Linux Cluster (Even If You Can’t Update Now)

 

One UDP packet crashes your Corosync cluster. Check, patch, or firewall it. Commands for Ubuntu, Rocky, SUSE + bash script .

Flatpak Apps Can Break Out of Sandboxes: How to Lock Down Your Linux Desktop (Fix & Automation)

 

Stop chasing CVEs. One bash script checks & fixes Flatpak breakout flaws on Ubuntu, Rocky, SUSE. Includes iptables block & AppArmor profiles.

Cockpit Machines: Defeating ReDoS & CPU Exhaustion Attacks (Complete Fix Guide)

 

Cockpit Machines vulnerable to ReDoS (CVE-2026-25547, CVE-2026-26996). Permanent fix guide: detection commands, bash automation, iptables, lab. No expiry.

Lua in Python: The Sandbox Escape You Need to Patch (CVE-2026-34444)

 

Patch CVE-2026-34444: Check lupa version, run the fix script, block RCE with iptables, and test in a free lab.