Common Problems

Oracle Linux 8 — openwsman — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — openwsman — vulnerability — patch and remediation guide (ELSA-2019-0972)

🟠 High   ⏱ 15–60 min  Last verified: 27 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-0972 Related CVEs: CVE-2019-3816 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 — opensmtpd — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — opensmtpd — multiple vulnerabilities (4 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-202002-13 Related CVEs: CVE-2020-8794 CVE-2020-7247 CVE-2020-35680 CVE-2020-35679 Upstream summary: Type: arbitrary command execution. Status: Fixed. Affected: 6.6.3p1-1. Fixed in: 6.6.4p1-1. Group: AVG-1105. Table of contents Symptom & Impact Environment & […]

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IBM AIX 7.2 — CVE-2020-4771 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2020-4771 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 26 December 2020 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2020-4771, IBM Support Bulletin CVE: CVE-2020-4771 NVD summary: IBM Spectrum Protect Operations Center 8.1.0.000 through 8.1.10.and 7.1.0.000 through 7.1.11 could allow a remote attacker to obtain sensitive information, caused by improper authentication […]

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Oracle Linux 8 — .NET 5.0 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET 5.0 security and bugfix update (ELSA-2022-0495)

🟠 High   ⏱ 15–60 min  Last verified: 26 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0495 Related CVEs: CVE-2022-21986 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 121628

Ext4 Filesystem Remounted Read-Only After I/O Errors

🔴 Critical   ⏱ 5–30 min  Last verified: 26 December 2020 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 119109

Ubuntu 14.04 LTS Kernel Panic After Generic Kernel Update

🟡 Medium   ⏱ 5–30 min  Last verified: 26 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 117552

Ubuntu 20.04 LTS LVM Volume Not Extending After Disk Resize

🟡 Medium   ⏱ 5–30 min  Last verified: 26 December 2020 Affected versions: 20.04 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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Common Problems 115074

tuned Profile Not Applied After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 26 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 115043

RHEL 8 dnf-makecache timer spikes CPU and disk unexpectedly

🟡 Medium   ⏱ 5–30 min  Last verified: 26 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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Ubuntu 18.04 — php-horde-css-parser — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — php-horde-css-parser — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 December 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7502-1 Related CVEs: CVE-2020-13756 Upstream summary: It was discovered that Horde Css Parser did not correctly handle parsing uncontrolled CSS data. An attacker could possibly use this issue to perform […]

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