March 2023

Common Problems 124527

Oracle Linux 9 – Common Problem 007 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 31 March 2023 Affected versions: Oracle Linux 9 📖 ~3 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 115132

SELinux Denials Breaking Web Application Access – RHEL 8 Post 030

🟡 Medium   ⏱ 5–30 min  Last verified: 31 March 2023 📖 ~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 111822

Windows Server 2022 — AD monitoring misses failed logon spikes during peak hours — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 31 March 2023 Affected versions: Windows Server 2022 📖 ~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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How to Tune System Performance with tuned on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Tune System Performance with tuned on Oracle Linux 9

Introduction Setting up tune system performance with tuned on oracle linux 9 on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Tune System Performance with tuned on Oracle Linux 9, with all the commands you need, the SELinux and firewalld […]

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openSUSE Tumbleweed — swtpm — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — swtpm — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2022:1101-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23645 CVE-2020-28407 Upstream summary: swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 […]

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Ubuntu 22.04 — busybox — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — busybox — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 March 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6961-1 Related CVEs: CVE-2022-48174 CVE-2023-42363 CVE-2023-42364 CVE-2023-42365 Upstream summary: It was discovered that BusyBox did not properly validate user input when performing certain arithmetic operations. If a user or automated […]

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