Linux

Amazon Linux 2 — libvorbis — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libvorbis — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2018-981 Related CVEs: CVE-2018-5146 Upstream summary: Vorbis audio processing out of bounds write (MFSA 2018-08): An out of bounds write flaw was found in the processing of vorbis audio data. […]

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Common Problems 121701

Debian 9 – cloud-init Datasource Timeout Delays Boot – Fast Metadata Recovery

🟡 Medium   ⏱ 5–30 min  Last verified: 1 October 2019 Affected versions: Debian 9 📖 ~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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Common Problems 118629

Ubuntu 16.04 LTS – SSL certificate validation fails due to outdated CA store – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2019 Affected versions: Ubuntu 16.04 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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Common Problems 118570

Ubuntu 16.04 webcam not working in video apps

🟡 Medium   ⏱ 5–30 min  Last verified: 1 October 2019 📖 ~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 117996

Ubuntu 18.04 LTS – disk full under /var/log causes service failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2019 Affected versions: Ubuntu 18.04 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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Ubuntu 14.04 — librabbitmq — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — librabbitmq — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 October 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4214-1 Related CVEs: CVE-2019-18609 Upstream summary: It was discovered that RabbitMQ incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. Table of contents Symptom […]

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Alpine Linux edge — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.7.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — gtk-vnc 0.7.0-r0 Related CVEs: CVE-2017-5884 CVE-2017-5885 Upstream summary: Alpine community repository for vedge ships gtk-vnc 0.7.0-r0 which addresses CVE-2017-5884. Table of contents Symptom & Impact […]

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Oracle Linux 8 — irssi — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — irssi — vulnerability — patch and remediation guide (ELSA-2020-1616)

🟢 Low   ⏱ 5–15 min  Last verified: 1 October 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1616 Related CVEs: CVE-2019-13045 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 Configure ACLs on Ext4 File Systems on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure ACLs on Ext4 File Systems on Debian 9

Introduction This guide explains how to Configure ACLs on Ext4 File Systems on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install […]

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