chris

Debian 11 — varnish — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — varnish — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2936 CVE-2009-4488 CVE-2013-4090 CVE-2013-4484 CVE-2015-8852 CVE-2017-12425 CVE-2017-8807 CVE-2019-15892  +11 more Upstream summary: The Command Line Interface (aka Server CLI or administration interface) in the master process in the […]

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Debian 11 — tiemu — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — tiemu — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-20040 CVE-2017-20225 Upstream summary: TiEmu 3.03-nogdb+dfsg-3 contains a buffer overflow vulnerability in the ROM parameter handling that allows local attackers to crash the application or execute arbitrary code. […]

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Einführung in das Konfigurationsmanagement mit Ansible — step-by-step Devops tutorial on Progressive Robot

Einführung in das Konfigurationsmanagement mit Ansible

Konfigurationsmanagement ist die Verwaltung von Änderungen in einem System auf eine Weise, die dauerhafte Integrität gewährleistet. Dazu werden in der Regel Tools und Prozesse verwendet, die für Automatisierung und Beobachtbarkeit sorgen. Das Konzept wurde zwar nicht in der…

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Oracle Linux 8 — emacs — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — emacs — security and stability fixes — required update (ELSA-2023-3042)

🟡 Medium   ⏱ 10–30 min  Last verified: 29 November 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-3042 Related CVEs: CVE-2022-45939 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 121571

Debian 9 – ext4 Filesystem Remounts Read-Only – Root Cause and Repair

🔴 Critical   ⏱ 5–30 min  Last verified: 29 November 2021 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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AlmaLinux 8 — mingw-openssl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — mingw-openssl — 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-2019:3683 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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How to Deploy a Flask App with Gunicorn on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Deploy a Flask App with Gunicorn on FreeBSD 13

Introduction This guide explains how to Deploy a Flask App with Gunicorn on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum […]

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AlmaLinux 8 — xorg-x11-util-macros — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — xorg-x11-util-macros — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4742 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 117409

Ubuntu 20.04 no sound output on speakers or headset

🟡 Medium   ⏱ 5–30 min  Last verified: 29 November 2021 📖 ~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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