Linux

CentOS Stream 10 — apache-commons-beanutils — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — apache-commons-beanutils — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 June 2025 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:9166 Related CVEs: CVE-2025-48734 Upstream summary: The Apache Commons BeanUtils library provides utility methods for accessing and modifying properties of arbitrary JavaBeans. Security Fix(es): * commons-beanutils: Apache Commons BeanUtils: PropertyUtilsBean does […]

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openSUSE Leap 15.6 — libgit2 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — libgit2 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2024:2584-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-24575 Upstream summary: libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing […]

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openSUSE Leap 15.5 — libpcap1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — libpcap1 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2024:3210-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-7256 CVE-2024-8006 Upstream summary: In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly […]

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Oracle Linux 9 — shadow-utils — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — shadow-utils — security and stability fixes — required update (ELSA-2023-6632)

🟢 Low   ⏱ 5–15 min  Last verified: 9 June 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6632 Related CVEs: CVE-2023-4641 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 126981

CentOS Stream 10 – Common Problem 202 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2025 Affected versions: CentOS Stream 10 📖 ~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 […]

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How to Configure Corosync on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Corosync on CentOS Stream 10

Introduction Setting up configure corosync on centos stream 10 on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Corosync on CentOS Stream 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Configure Disk Encryption with LUKS on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Disk Encryption with LUKS on RHEL 10

Introduction This tutorial demonstrates how to Configure Disk Encryption with LUKS on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default AppStream […]

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Common Problems 120015

Debian 12 Systemd Service Fails to Start

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2025 Affected versions: Debian 12 📖 ~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 & […]

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AlmaLinux 8 — perl-Config-Perl-V — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — perl-Config-Perl-V — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:8096 Related CVEs: CVE-2025-40909 CVE-2023-47038 Upstream summary: Perl is a high-level programming language that is commonly used for system administration utilities and web programming. Security Fix(es): * perl: Perl threads have a […]

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Common Problems 116971

Ubuntu 22.04 LTS – UFW allows service but traffic still blocked by policy order – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 9 June 2025 Affected versions: Ubuntu 22.04 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 […]

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