Security Hardening

How to Install PHP 8.3 on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install PHP 8.3 on Debian 13

Introduction How to Install PHP 8.3 on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This […]

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Amazon Linux 2 — aws-kinesis-agent — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — aws-kinesis-agent — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2021-1730 Related CVEs: CVE-2021-44228 CVE-2021-45046 CVE-2022-42004 CVE-2025-49128 CVE-2021-44832 CVE-2021-45105 Upstream summary: Amazon Kinesis Agent versions within Amazon Linux 2 (AL2) prior to aws-kinesis-agent-2.0.4-1 included a version of Apache Log4j affected […]

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Common Problems 127178

CentOS Stream 10 – Common Problem 172 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 3 October 2025 Affected versions: CentOS Stream 10 📖 ~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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AlmaLinux 9 — libtpms — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — libtpms — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:12100 Related CVEs: CVE-2025-49133 CVE-2023-1017 CVE-2023-1018 Upstream summary: The libtpms is a library providing Trusted Platform Module (TPM) functionality for virtual machines. Security Fix(es): * libtpms: Libtpms Out-of-Bounds Read Vulnerability (CVE-2025-49133) For […]

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Common Problems 113921

RHEL 10 – NetworkManager service not starting after config drift – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 3 October 2025 Affected versions: RHEL 10 📖 ~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 Schedule Tasks with cron on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Schedule Tasks with cron on Oracle Linux 10

Introduction How to Schedule Tasks with cron 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 […]

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Common Problems 124148

Oracle Linux 10 – logrotate fails on custom app logs with permission errors – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 3 October 2025 Affected versions: Oracle Linux 10 📖 ~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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Amazon Linux 2023 — libblockdev — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — libblockdev — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1020 Related CVEs: CVE-2025-6019 Upstream summary: LPE from allow_active to root in libblockdev via udisks (CVE-2025-6019) Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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FreeBSD 12 — qt6-base — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — qt6-base — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 October 2025 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: qt6-base — DoS in QColorTransferGenericFunction Related CVEs: CVE-2023-51714 CVE-2024-33861 CVE-2025-5992 Upstream summary: Andy Shaw reports: When passing values outside of the expected range to QColorTransferGenericFunction it can cause a denial […]

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