Common Problems

FreeBSD 12 — rubygem-activejob — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-activejob — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Rails — Active Job vulnerability Related CVEs: CVE-2018-16476 Upstream summary: Ruby on Rails blog: Rails 4.2.11, 5.0.7.1, 5.1.6.1 and 5.2.1.1 have been released! These contain the following important security fixes, […]

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Debian 9 — e2fsprogs — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — e2fsprogs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-5094 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 9 — ffmpeg — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — ffmpeg — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-9608 CVE-2017-14054 CVE-2017-15186 CVE-2017-17081 CVE-2018-6392 CVE-2018-14395 CVE-2018-15822 CVE-2019-12730 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix […]

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Arch Linux — libvirt — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libvirt — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202101-42 Related CVEs: CVE-2020-25637 CVE-2020-14339 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1:6.5.0-3. Fixed in: 1:7.0.0-1. Group: AVG-1240. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 118616

Ubuntu 16.04 LTS locale warnings: Perl locale not supported

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2020 📖 ~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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Common Problems 115559

RHEL 7 rsyslog not forwarding logs to remote collector

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2020 Affected versions: RHEL 7 📖 ~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 115070

UTF-8 locale not configured correctly

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2020 📖 ~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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Common Problems 112953

Windows Server 2016 — WinRM service unavailable for remote management — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 17 March 2020 Affected versions: Windows Server 2016 📖 ~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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Alpine Linux edge — cairo — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — cairo — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.17.4-r1 📖 ~4 min read  •  Source: Alpine secdb entry — cairo 1.17.4-r1 Related CVEs: CVE-2019-6462 CVE-2020-35492 CVE-2018-19876 Upstream summary: Alpine main repository for vedge ships cairo 1.17.4-r1 which addresses CVE-2019-6462. Table of contents Symptom & […]

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Common Problems 112906

Windows Server 2016 ReFS Metadata Corruption Warnings on Data Volume – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 17 March 2020 Affected versions: Windows Server 2016 📖 ~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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