Linux 7.4 e o AVX-512: O que Muda no Desempenho do Seu RAID

 

O Linux 7.4 recebe otimização AVX-512 no xor_gen: ganhos de até 43% em RAID5/6. Veja o que muda, quais CPUs são suportadas e como se preparar para o upgrade.

Fedora 45 Beta: O Guia Completo Sobre a Nova Versão do Linux

 

O Fedora 45 Beta chega com o console KMSCON, segurança reforçada e GNOME 51. Veja as novidades, como instalar e a melhor recomendação de SSD para Linux. Confira!

Kubernetes 1.35 no Fedora: Guia Definitivo para Mitigar a Vulnerabilidade SPDY (CVE-2026-35469)

 

Aprenda a identificar, corrigir e se proteger contra a vulnerabilidade CVE-2026-35469 no Kubernetes 1.35 do Fedora. Guia completo com comandos para verificação, script de automação, mitigação alternativa com iptables e dicas de especialista para manter seu cluster seguro. 

Kubernetes no Fedora: Guia Definitivo para Proteger seu Cluster contra Ataques DoS

 

A vulnerabilidade CVE-2026-35469 no Kubernetes do Fedora permite ataques DoS via SPDY. Aprenda a verificar seu sistema, aplicar o patch com um script automatizado e implementar mitigações alternativas. Guia completo com comandos reais para Fedora Linux. Proteja seu cluster agora mesmo com medidas práticas e recomendações de hardening.

Fedora Kubernetes: Entendendo e Mitigando a Vulnerabilidade DoS no SPDY

 A vulnerabilidade CVE-2026-35469 afeta o Kubernetes no Fedora através de um ataque DoS via SPDY. Aprenda a verificar se seu cluster está vulnerável, aplique a correção com um script automatizado e implemente mitigações alternativas enquanto não pode atualizar. Guia completo para administradores de sistemas Linux.

Xwayland no Fedora: Guia definitivo para identificar falhas, aplicar correção automática e blindar seu sistema ( com scripts e livro essencial )

 

Vulnerabilidades críticas no Xwayland foram corrigidas. Descubra se seu Fedora está vulnerável, aplique a correção com um script automático e implemente mitigações alternativas. Mantenha seu sistema seguro com este guia definitivo.

Proteja seu servidor: Guia definitivo para corrigir a vulnerabilidade SSRF no WeasyPrint

 

Aprenda a corrigir a vulnerabilidade SSRF no WeasyPrint no Fedora. Guia passo a passo com comandos, script e mitigação alternativa para proteger seus servidores.

Roundcube Webmail no Fedora: Guia Completo de Segurança e Correção de Vulnerabilidades

Aprenda a corrigir vulnerabilidades de XSS e SQL no Roundcube Webmail no Fedora com um guia perene completo: comandos de verificação, script de correção automática e mitigações alternativas usando iptables e ModSecurity. Inclui recomendação de livro para aprofundamento em segurança Linux.

How to Harden rust-sequoia-git on Fedora Linux

 

Discover how to secure rust-sequoia-git on Fedora Linux by fixing a broken hard revocation vulnerability. This guide offers commands to check your current version, an iptables workaround, plus a practical DNF update script to secure your Git commit signing policy permanently.

Securing Your Git Commit Signing Policy: A Practical Guide to the Sequoia-Git Vulnerability

 

Learn how to address the RUSTSEC-2026-0109 vulnerability in sequoia-git on Fedora Linux. This comprehensive, evergreen guide provides step-by-step checks, an automation script for applying the fix to versions before 0.6.0, and alternative temporary mitigations like iptables restrictions and AppArmor profiles to protect your commit signing policy and project integrity.

Fortify Fedora: The Administrator's Guide to NSS Security

Keep your Fedora Linux secure against NSS crypto flaws. Complete guide: check your system, automate patches, and alternative mitigations for NSS-related risks.

Kerberos (krb5) Security Update: NegoEx DoS Vulnerabilities Explained

 

Learn how to protect your Fedora Linux systems from NegoEx parsing vulnerabilities (CVE-2026-40355, CVE-2026-40356) in MIT Kerberos 5 (krb5). Includes manual checks, automation scripts, and firewall-based workarounds for unpatched systems. Practical guide for system administrators.

Discover the Simple Fix for This Critical Security Update and Apply It Immediately

 

Out‑of‑bounds write and memory corruption in rust‑openssl‑sys affect Fedora 42–44. Step‑by‑step check commands, automation script, iptables workaround, and affiliate laboratory kit – all in one actionable guide.

Fedora 43 Security Advisory: Critical Buffer Overflow Vulnerability (CVE-2026-32875) in python-ujson Demands Immediate Update to 5.12.0

 

Critical security advisory: Fedora 43 users must immediately update python-ujson to version 5.12.0 to patch CVE-2026-32875 and CVE-2026-32874. This update resolves a high-severity buffer overflow vulnerability and a memory leak DoS, ensuring the integrity and performance of Python applications relying on ultra-fast JSON processing. Learn the technical details, exploitation vectors, and step-by-step remediation instructions to secure your development environment and production servers.

Critical glib2 Security Update: Patching CVE-2026-0988 Integer Overflow in Fedora 43

 

A critical integer overflow vulnerability (CVE-2026-0988) in glib2 for Fedora 43 was patched on March 21, 2026. This security update prevents denial-of-service attacks via segmentation faults. Learn how to secure your system with the official DNF upgrade advisory FEDORA-2026-5637749c07, including technical analysis, impact assessment, and mitigation steps for enterprise Linux environments.

Fedora 43 .NET 10.0 Security Alert: Patching a Critical ASP.NET Core DoS Vulnerability (CVE-2026-26130)

Critical security update for Fedora 43: .NET 10.0 addresses CVE-2026-26130, a high-severity ASP.NET Core denial-of-service vulnerability. Learn about the uncontrolled resource allocation flaw, its impact on web applications, and get immediate remediation steps with the DNF package manager. Essential guidance for developers and sysadmins.

Urgent Fedora 43 Security Update: Vim Patchlevel 148 Neutralizes Critical CVE-2026-32249

 

Urgent Fedora 43 security update addresses Vim CVE-2026-32249, a critical NULL pointer dereference in the NFA regex engine. This patchlevel 148 fix prevents potential crashes and code execution risks. Learn about the vulnerability, its impact, and get step-by-step DNF upgrade commands to secure your system against this high-severity threat.

Critical Alertmanager Security Hardening: Fedora 43's 0.31.1 Update Explained

 

Critical security updates for Fedora 43's Alertmanager 0.31.1 address high-impact CVEs including ALPN leaks, CPU exhaustion, and memory consumption. This guide details the patch, its implications for your Prometheus monitoring stack, and expert-recommended deployment commands to ensure robust production stability and compliance.

Critical Fedora 43 Security Update: SDL3_sound Denial of Service Vulnerability (CVE-2025-14369)

 

Secure your Fedora 43 system against CVE-2025-14369. This critical security update for SDL3_sound (version 3.0.0~20260117gitb00e4a3) patches a severe integer overflow vulnerability in dr_flac FLAC metadata handling that could lead to a complete Denial of Service. Learn about the technical impact, remediation steps, and best practices for maintaining audio library security in enterprise Linux environments.

Urgent Fedora 43 Security Update: Taskwarrior Patches Critical Denial of Service (CVE-2026-25727) and Cryptographic Flaws

 

Discover the critical Fedora 43 Taskwarrior security update addressing CVE-2026-25727 and other high-severity flaws. This deep dive analyzes the stack exhaustion denial of service vulnerability, its implications for your DevOps pipeline, and provides a definitive guide to patching your system with the latest DNF commands to ensure enterprise-grade task management security.