RLSA-2026:28143 – Atualização de Segurança Crítica para PostgreSQL 16 no Rocky Linux 8

 

Atualização crítica RLSA-2026:28143 para PostgreSQL 16 no Rocky 8. Corrige RCE (CVE-2026-6473) e ataque de timing (CVE-2026-6478). Comandos práticos e automação.

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.

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.

CVE-2026-9064 no 389-ds-base: Guia Definitivo para Proteger seu Servidor LDAP no Rocky Linux

 

 A vulnerabilidade CVE-2026-9064 no 389-ds-base permite negação de serviço remota via requisições LDAP maliciosas. Aprenda a verificar, corrigir e mitigar o problema no Rocky Linux com comandos práticos, script de automação e alternativas para quando não é possível atualizar imediatamente. Proteja sua infraestrutura de autenticação agora.

opencryptoki no Oracle Linux: entenda a falha CVE-2026-40253 e proteja seu sistema

 

Proteja seu Oracle Linux contra a falha CVE-2026-40253 no opencryptoki. Aprenda a verificar, corrigir com script automatizado e aplicar mitigações alternativas mesmo sem atualização imediata. Guia prático com comandos reais.

OpenMoonRay: A Complete Guide to DreamWorks’ Production-Proven Renderer Now Under the Academy Software Foundation

DreamWorks’ OpenMoonRay renderer joins the Academy Software Foundation. Learn how to use this production-proven, open-source path tracer in your VFX pipeline.

From Zero to Privileged: Understanding and Fixing the libcap Capabilities Flaw

 

Don't let libcap vulnerabilities catch you off guard. Learn how to manually check your Rocky Linux systems for privilege escalation bugs, apply a working automation script, and layer your defense with alternative mitigations – including a Raspberry Pi lab setup for safe testing.

How to Secure Python 3.12 on Rocky Linux (and Build Your Own Analysis Tools)

Secure your Rocky Linux Python 3.12 installs today. Step-by-step commands to check for the libexpat CVE-2025-59375, auto-fix scripts, and fallback mitigation. Plus, learn how to master binary analysis and build your own security tools with a top-rated book.

How to Fix Linux Kernel Race Conditions (CVE-2026-23191) Without Breaking Real-Time Workloads

 

A race condition in the Linux kernel ALSA loopback driver (CVE-2026-23191) can crash real-time systems. Learn how to check, patch, and mitigate this flaw on Rocky Linux and other distros—with a ready-to-use bash script and a book that teaches you to handle any future CVE.

Real-Time Kernel Vulnerabilities (CVE-2025-68741 & CVE-2026-23191)

 

Stop chasing CVEs. Learn to check, fix, and mitigate kernel flaws (like CVE-2025-68741) in AlmaLinux/Rocky Linux 8, RHEL. Includes a bash script, iptables backup plan, and a book that teaches you to find zero-days yourself. 

Kea DHCP Stack Overflow: A Practical Guide to Checking, Patching, and Blocking (CVE-2026-3608)

 

A stack overflow in Kea DHCP (CVE-2026-3608) can crash your DHCP servers remotely. Learn to check, patch, or block it with iptables. Includes automation scripts for Ubuntu, Rocky, and SUSE. No fluff, just commands.

RootlessKit Security Vulnerability: How to Harden Your Container Environment Permanently (Not Just a One-Time Fix)

 

A RootlessKit vulnerability can expose your container runtime. Learn how to check your version on SUSE, apply an automated fix, and implement temporary firewall mitigations. Includes a top book recommendation to master container security for years.

RootlessKit Security: A Practical Guide to Container Isolation (That Works Today and Next Year)

 

RootlessKit security updates don't have to be urgent news. Learn to check, fix, and mitigate container risks on Ubuntu, Rocky Linux, SUSE – plus a repeatable automation script. Stay secure long after the CVE fades.

How to Secure Your Containerd Runtime: A Permanent Fix for Go Vulnerabilities

 

Stop chasing outdated security advisories. Learn how to check, patch, and mitigate containerd vulnerabilities across Ubuntu, Rocky Linux, and SUSE. Includes a universal bash script, iptables backup plan, and a recommended book for mastering container security.

GEGL Buffer Overflow: A Sysadmin’s Permanent Guide to Handling Image Parsing Flaws (No Hype, Just Fixes)

 

Stop hunting for one-off patches. This permanent guide covers CVE-2026-2049-style heap overflows in GEGL: check commands for Ubuntu/Rocky Linux /SUSE, a universal bash fix, iptables mitigation, and an automation book. No expiration date.

The Complete Guide to Securing Buildah Container Environments

 

Secure your container builds: A permanent guide to Buildah security updates. Includes check scripts, automation, and mitigation for Ubuntu, Rocky, SUSE. (188 chars)

.NET on Linux: Stop Guessing About Security Patches (A Practical Guide)

 

Running .NET 9 on Linux? Unpatched runtimes expose your servers to remote code execution. This guide shows you how to check your systems, apply the fix with a universal bash script, and block attacks with iptables if you cannot reboot today. Includes automation for Ubuntu, Rocky, and SUSE.

.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 FreeRDP Against Heap Overflows & DoS Attacks (No Matter the Distro)

 

Stop worrying about specific CVE dates. Learn to check, patch, and mitigate FreeRDP vulnerabilities (heap overflows, DoS) on Ubuntu, Rocky Linux, SUSE. Includes automation scripts, Docker lab, and fail-safe iptables rules. Practical guide for 2026 and beyond.

How to Fix the Aqualung Audio Player Out-of-Bounds Read (CVE-2025-61043)

 

Fix CVE-2025-61043 in Aqualung on Fedora/RHEL/SUSE. Commands to check vulnerability, bash automation, and iptables mitigation. Plus a no-update workaround.