Troubleshooting

Ubuntu 18.04 — python-psutil — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — python-psutil — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4204-1 Related CVEs: CVE-2019-18874 Upstream summary: Riccardo Schirone discovered that psutil incorrectly handled certain reference counting operations. An attacker could use this issue to cause psutil to crash, resulting in […]

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How to Install pip and Manage Python Packages on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install pip and Manage Python Packages on Debian 9

Introduction This guide explains how to Install pip and Manage Python Packages 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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Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide (ELSA-2019-1268)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1268 Related CVEs: CVE-2019-10132 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 119084

Ubuntu 14.04 LTS High iowait Slows Entire System

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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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FreeBSD 12 — mod_dosevasive — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mod_dosevasive — security advisory — 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: mod_dosevasive — insecure temporary file creation Upstream summary: An LSS Security Advisory reports: When a denial of service attack is detected, mod_dosevasive will, among other things, create a temporary file […]

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Common Problems 119039

Ubuntu 14.04 LTS – Python HTTPS requests fail certificate verification

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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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Common Problems 118999

Ubuntu 14.04 LTS – SSH connection refused after security hardening

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 Deploy a Rust Web Application on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Deploy a Rust Web Application on SLES 12

Introduction This tutorial covers How to Deploy a Rust Web Application on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: […]

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Common Problems 118581

Ubuntu 16.04 LTS – Docker reports no space left on device during image pulls – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 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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FreeBSD 12 — mnemo — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mnemo — security advisory — 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: mnemo — Cross site scripting vulnerabilities in several of the notepad name and note data fields Upstream summary: Announce of Mnemo H3 (2.0.3) (final): This [2.0.3] is a security release […]

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