Common Problems

Common Problems 112574

Windows Server 2019 — AD orphaned object cleanup needed after failed domain controller removal — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 January 2021 Affected versions: Windows Server 2019 📖 ~2 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 — raptor2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — raptor2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.0.15-r3 📖 ~4 min read  •  Source: Alpine secdb entry — raptor2 2.0.15-r3 Related CVEs: CVE-2020-25713 CVE-2017-18926 Upstream summary: Alpine community repository for vedge ships raptor2 2.0.15-r3 which addresses CVE-2020-25713. Table of contents Symptom & Impact […]

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Debian 10 — httpcomponents-client — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — httpcomponents-client — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 January 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-13956 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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Arch Linux — poppler — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — poppler — multiple vulnerabilities (3 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-202101-3 Related CVEs: CVE-2020-35702 CVE-2017-9776 CVE-2017-9775 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 20.12.1-1. Fixed in: 21.01.0-1. Group: AVG-1382. Table of contents Symptom & Impact Environment & Reproduction […]

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Oracle Linux 8 — dotnet5.0 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dotnet5.0 security and bugfix update (ELSA-2021-0094)

🟠 High   ⏱ 15–60 min  Last verified: 31 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0094 Related CVEs: CVE-2021-1723 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 118132

Ubuntu 18.04 LTS – CPU spikes caused by runaway logrotate postrotate script

🟡 Medium   ⏱ 5–30 min  Last verified: 31 December 2020 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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Common Problems 115583

RHEL 7 – Yum Transaction Check Error from Mixed Repositories

🟡 Medium   ⏱ 5–30 min  Last verified: 31 December 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 114899

RHEL 8 – RPM Database Lock Prevents Package Operations

🟡 Medium   ⏱ 5–30 min  Last verified: 31 December 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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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-2020-4059)

🟠 High   ⏱ 15–60 min  Last verified: 31 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4059 Related CVEs: CVE-2020-10756 CVE-2020-14364 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2021-9487)

🟠 High   ⏱ 15–60 min  Last verified: 31 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9487 Related CVEs: CVE-2017-6074 CVE-2020-16119 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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