March 2021 - Page 67 of 69

Oracle Linux 8 — glib2 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — glib2 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2019-3530)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3530 Related CVEs: CVE-2019-12450 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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Alpine Linux edge — ytnef — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ytnef — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.9.3-r1 📖 ~4 min read  •  Source: Alpine secdb entry — ytnef 1.9.3-r1 Related CVEs: CVE-2021-3403 CVE-2021-3404 Upstream summary: Alpine community repository for vedge ships ytnef 1.9.3-r1 which addresses CVE-2021-3403. Table of contents Symptom & Impact […]

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Common Problems 122064

devd Events Not Triggering Automation Scripts

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: FreeBSD 15 📖 ~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 121703

Debian 9: OOM killer terminates Java service under memory pressure

🔴 Critical   ⏱ 5–30 min  Last verified: 20 May 2026 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 117895

Ubuntu 18.04 LTS – apt update fails because dpkg lock is held

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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How to Install Cassandra on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Cassandra on Oracle Linux 8

Introduction How to Install Cassandra on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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FreeBSD 12 — py310-numpy — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py310-numpy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-numpy — Missing return-value validation of the function PyArray_DescrNew Related CVEs: CVE-2021-41495 Upstream summary: Numpy reports: At most call-sites for PyArray_DescrNew, there are no validations of its return, but an […]

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Node JS Environment Setup - Node.js installation — step-by-step Javascript tutorial on Progressive Robot

Node JS Environment Setup – Node.js installation

URL: https://www.progressiverobot.com/node-js-environment-setup-node-js-installation/ In my previous post, we have discussed about "[Introduction to Node JS Platform](/community/tutorials/introduction-to-node-js-basics "Introduction to Node JS – Node.js Basics")". Now we have some idea about what is Node JS and what is not Node JS. In this post, we will discuss about "How to setup Node JS Base Environment" in Windows OS […]

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