Linux

Oracle Linux 8 — python-psutil — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-psutil — vulnerability — patch and remediation guide (ELSA-2021-4324)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 November 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4324 Related CVEs: CVE-2019-18874 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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Debian 10 — mosquitto — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — mosquitto — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 November 2019 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-11779 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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openSUSE Tumbleweed — go1.11 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — go1.11 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:2000-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-9512 CVE-2019-9514 CVE-2019-14809 Upstream summary: Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings […]

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How To Add Swap Space on Debian 9 — step-by-step Linux tutorial on Progressive Robot

How To Add Swap Space on Debian 9

One of the easiest way of guarding against out-of-memory errors in applications is to add some swap space to your server. In this guide, we will cover how to add a swap file to a Debian 9 server. <$>[warning] Warning: Although swap is generally recommended for systems…

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Arch Linux — zsh — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — zsh — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201804-5 Related CVEs: CVE-2018-1100 CVE-2018-7549 CVE-2018-7548 CVE-2018-13259 CVE-2018-0502 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 5.4.2-2. Fixed in: 5.5-1. Group: AVG-669. Table of contents Symptom & Impact Environment […]

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Common Problems 118484

Ubuntu 16.04 LTS cron jobs not executing after timezone change

🟡 Medium   ⏱ 5–30 min  Last verified: 2 November 2019 Affected versions: 16.04 📖 ~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 […]

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Common Problems 117945

Ubuntu 18.04 LTS – SSH login rejected despite correct credentials

🟠 High   ⏱ 5–30 min  Last verified: 2 November 2019 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 Set Up Nexus Repository Manager on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Nexus Repository Manager on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up nexus repository manager on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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