🔴 Critical ⏱ 5–30 min Last verified: 6 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Introduction How to Use journalctl for System Log Analysis on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]
🟠 High ⏱ 15–60 min Last verified: 6 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2025-28068 Related CVEs: CVE-2025-40271 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
🟠 High ⏱ 15–60 min Last verified: 6 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8279-1 Related CVEs: CVE-2024-35862 CVE-2024-50060 CVE-2026-23274 CVE-2026-23351 CVE-2026-31419 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533 +12 more Upstream summary: It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic […]
NFS (Network File System) allows Linux systems to share directories over a network. It is the standard protocol for shared storage in Linux environments, used for home directories, media servers, and cluster storage. This guide sets up an NFS server and client on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu […]
🟡 Medium ⏱ 5–30 min Last verified: 5 May 2026 Affected versions: 26.04 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs […]
Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying configure firewalld rich rules both straightforward and auditable. This tutorial covers the complete procedure for how to Configure firewalld Rich Rules on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites The […]
🟠 High ⏱ 15–60 min Last verified: 5 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2025-28066 Related CVEs: CVE-2025-40215 CVE-2025-40271 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
🟠 High ⏱ 5–30 min Last verified: 4 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
🟠 High ⏱ 15–60 min Last verified: 4 May 2026 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory RHSA-2025:12746 (see also SUSE bugzilla) Related CVEs: CVE-2025-22020 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove This fixes the following crash: ================================================================== […]
