Linux - ShellSecrets

CVE-2026-123158 OpenSSH authentication bypass affecting certain Linux systems, illustrated with an unauthorized SSH login.

Security

CVE-2026-123158: OpenSSH Authentication Bypass Lets Attackers Log In Without Knowing a Password

An unusually long password can bypass OpenSSH authentication on certain Linux systems. Explore the vulnerability, affected configurations, and urgent fixes.

Security

CVE-2026-109518: Debian and Ubuntu APT Vulnerability Could Allow Root-Level Code Execution

A high-severity flaw in the APT package manager could let attackers bypass package verification and execute malicious code as root. Here's what Debian and Ubuntu administrators need to know.

System Administration

Linux File Permissions, Users & Groups: A Complete Practical Guide

Learn Linux file and directory permissions, users, groups, chmod, chown, umask, ACLs, and security best practices with practical examples.

Security

CVE-2026-98432: Critical Linux Kernel TCP Vulnerability Scores 9.8

Introduction A critical vulnerability in the Linux kernel's TCP networking subsystem has raised security concerns for organizations running Linux-based servers, cloud infrastructure, and containerized workloads. Tracked as CVE-2026-98432, the vulnerability has received a CVSS 3.1 score of 9.8 out of 10 from the

Linux

CVE-2026-99999 Explained: Understanding the Critical Linux Kernel Vulnerability That Could Enable Guest-to-Host Escape

The cybersecurity landscape evolves every day, but only a handful of vulnerabilities fundamentally change how organizations think about infrastructure security. CVE-2026-99999 is one of those vulnerabilities. Disclosed in October 2026 and widely referred to by the security community as PwnEscape, this Linux kernel vulnerability highlights an important truth:

Linux

Why Linux Servers Are Better for Cloud Hosting

Linux servers dominate the cloud hosting industry because they are secure, stable, lightweight, and cost-effective. Most cloud platforms including AWS, Google Cloud, and Azure heavily rely on Linux-based infrastructure. Advantages of Linux Servers Better Performance Linux consumes fewer system resources compared to Windows Server. Strong Security Linux has

Hosting

Why Nepali Businesses and Developers Are Choosing KVM VPS Hosting for Scalable International Projects

KVM VPS Nepal VPS Hosting Nepal Linux VPS Hosting Cloud Hosting Nepal Managed VPS Hosting High Performance VPS VPS for Developers VPS for SaaS Applications Scalable Cloud Infrastructure International Hosting Solutions

Linux

Linux Advanced Tuning with proc: Mastering Kernel Parameter Optimization

The Linux kernel is the heart of the operating system, managing hardware resources, process scheduling, memory allocation, and network communications. While default kernel configurations work well for general-purpose use, production environments handling specialized workloads often require fine-tuning to achieve optimal performance. One of the most powerful and flexible