Security Hardening

How to Install .NET SDK on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Install .NET SDK on Oracle Linux 10

Introduction How to Install .NET SDK on Oracle Linux 10 on Oracle Linux 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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Oracle Linux 8 — mod_auth_openidc:2.3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mod_auth_openidc:2.3 — vulnerability — patch and remediation guide (ELSA-2025-4597)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-4597 Related CVEs: CVE-2025-3891 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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Alpine Linux 3.20 — mercurial — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — mercurial — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 4.9-r0 📖 ~4 min read  •  Source: Alpine secdb entry — mercurial 4.9-r0 Related CVEs: CVE-2019-3902 Upstream summary: Alpine community repository for vv3.20 ships mercurial 4.9-r0 which addresses CVE-2019-3902. Table of contents Symptom & Impact Environment […]

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Common Problems 116445

Ubuntu 24.04 LTS – UFW rules accidentally block SSH access – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 August 2025 Affected versions: Ubuntu 24.04 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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Alpine Linux 3.20 — libuv — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — libuv — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.48.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libuv 1.48.0-r0 Related CVEs: CVE-2024-24806 CVE-2020-8252 Upstream summary: Alpine main repository for vv3.20 ships libuv 1.48.0-r0 which addresses CVE-2024-24806. Table of contents Symptom & Impact […]

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Oracle Linux 10 — python3.12 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — python3.12 — vulnerability — patch and remediation guide (ELSA-2025-10140)

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-10140 Related CVEs: CVE-2025-4330 CVE-2025-4517 CVE-2024-12718 CVE-2025-4138 CVE-2025-4435 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Oracle Linux 9 — php:8.3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — php:8.3 — vulnerability — patch and remediation guide (ELSA-2026-1429)

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-1429 Related CVEs: CVE-2025-14177 CVE-2025-14178 CVE-2025-14180 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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Common Problems 111148

Windows Server 2025 — GPU driver memory leak causing host memory exhaustion on Hyper-V — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 2025 Affected versions: Windows Server 2025 📖 ~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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CentOS Stream 9 — qt5-qt3d — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — qt5-qt3d — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2025 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:20963 Related CVEs: CVE-2025-11277 Upstream summary: Qt 3D provides functionality for near-realtime simulation systems with support for 2D and 3D rendering in both Qt C++ and Qt Quick applications). Security Fix(es): […]

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Windows Server 2019 — KB5061072 — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5061072 — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5061072 • MSRC update-guide entry Related CVEs: CVE-2025-32712 CVE-2025-32713 CVE-2025-32714 CVE-2025-32716 CVE-2025-32724 CVE-2025-33064 CVE-2025-33066 CVE-2025-33075  +3 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: Use after free in Windows […]

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