Linux

Debian 11 — clamav — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — clamav — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0946 CVE-2004-0270 CVE-2004-1876 CVE-2004-1909 CVE-2005-0133 CVE-2005-0218 CVE-2005-1922 CVE-2005-1923  +12 more Upstream summary: Format string vulnerability in clamav-milter for Clam AntiVirus 0.60 through 0.60p, and other versions before 0.65, […]

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How to Configure Container Networking with CNI Plugins on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Container Networking with CNI Plugins on Debian 11

Introduction Deploying configure container networking with cni plugins on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites […]

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Oracle Linux 8 — .NET Core 3.1 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core 3.1 security and bugfix update (ELSA-2020-3422)

🟠 High   ⏱ 15–60 min  Last verified: 6 May 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3422 Related CVEs: CVE-2020-1597 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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How To Manage Lists in Redis — step-by-step Linux tutorial on Progressive Robot

How To Manage Lists in Redis

In Redis, a list is a collection of strings sorted by the order in which they were inserted unless otherwise specified, similar to linked lists. This tutorial details how to create lists and retrieve and delete elements from lists.

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AlmaLinux 8 — python-scour — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — python-scour — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:1833 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 119103

Ubuntu 14.04 LTS cannot resolve hostnames after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 6 May 2022 📖 ~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 References & Further […]

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Common Problems 117101

Ubuntu 22.04 LTS – systemd service fails at boot because of missing dependency unit – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 6 May 2022 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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How to Configure Kernel Parameters with sysctl on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Kernel Parameters with sysctl on CentOS Stream 9

Introduction This tutorial demonstrates how to Configure Kernel Parameters with sysctl on CentOS Stream 9 on CentOS Stream 9. 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 CentOS Stream 9 system with […]

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Common Problems 115051

RHEL 8 journald Rate Limiting Hiding Critical Service Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 6 May 2022 📖 ~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 References & Further […]

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