Linux

Alpine Linux 3.18 — libmad — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — libmad — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 0.15.1b-r9 📖 ~4 min read  •  Source: Alpine secdb entry — libmad 0.15.1b-r9 Related CVEs: CVE-2017-8372 CVE-2017-8373 CVE-2017-8374 CVE-2017-11552 CVE-2018-7263 Upstream summary: Alpine community repository for vv3.18 ships libmad 0.15.1b-r9 which addresses CVE-2017-8372. Table of contents […]

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How to Install and Use tmux on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Use tmux on Debian 12

Introduction Deploying install and use tmux on debian 12 on a Debian 12 Bookworm 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 Before you […]

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Oracle Linux 9 — linux-firmware security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — linux-firmware security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-6595)

🟠 High   ⏱ 15–60 min  Last verified: 24 October 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6595 Related CVEs: CVE-2022-40964 CVE-2022-27635 CVE-2023-20569 CVE-2022-38076 CVE-2022-36351 CVE-2022-46329 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Set Up the ELK Stack on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up the ELK Stack on CentOS Stream 9

Introduction This tutorial demonstrates how to Set Up the ELK Stack 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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Alpine Linux edge — ruby-activesupport — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ruby-activesupport — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 7.0.4.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — ruby-activesupport 7.0.4.3-r0 Related CVEs: CVE-2023-28120 CVE-2023-22796 Upstream summary: Alpine community repository for vedge ships ruby-activesupport 7.0.4.3-r0 which addresses CVE-2023-28120. Table of contents Symptom & Impact […]

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Common Problems 120019

Debian 12: PostgreSQL not starting after config edit

🔴 Critical   ⏱ 5–30 min  Last verified: 24 October 2023 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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Debian 12 — libbluray — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libbluray — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-7810 Upstream summary: libbluray MountManager class has a time-of-check time-of-use (TOCTOU) race when expanding JAR files Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Debian 12 — libseccomp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libseccomp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9893 Upstream summary: libseccomp before 2.4.0 did not correctly generate 64-bit syscall argument comparisons using the arithmetic operators (LT, GT, LE, GE), which might able to lead to […]

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Common Problems 117567

Ubuntu 20.04 LTS – snap refresh hangs and blocks package operations – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 October 2023 Affected versions: Ubuntu 20.04 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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Debian 12 — ioquake3 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — ioquake3 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2082 CVE-2006-2236 CVE-2006-2875 CVE-2006-3324 CVE-2006-3325 CVE-2011-1412 CVE-2011-2764 CVE-2011-3012  +4 more Upstream summary: Directory traversal vulnerability in Quake 3 engine, as used in products including Quake3 Arena, Return to […]

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