chris

Common Problems 124172

Oracle Linux 10 – LVM Thin Pool Metadata Nearly Full and Writes Stall – Capacity Recovery

🔴 Critical   ⏱ 5–30 min  Last verified: 26 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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Common Problems 124084

Oracle Linux 10 – Podman container cannot bind low port under SELinux enforcing – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 26 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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How to Use Amanda for Enterprise Backup on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Use Amanda for Enterprise Backup on Oracle Linux 10

Introduction How to Use Amanda for Enterprise Backup 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 […]

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Debian 13 — freedombox — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — freedombox — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-68462 Upstream summary: Freedombox before 25.17.1 does not set proper permissions for the backups-data directory, allowing the reading of dump files of databases. Table of contents Symptom & Impact […]

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Common Problems 119632

Debian 13 – fail2ban Not Banning on nftables Backend – Action Configuration Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 2025 Affected versions: Debian 13 (Trixie) 📖 ~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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Debian 11 — node-elliptic — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-elliptic — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 26 October 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-13822 CVE-2020-28498 CVE-2024-42459 CVE-2024-42460 CVE-2024-42461 CVE-2024-48948 CVE-2024-48949 CVE-2025-14505 Upstream summary: The Elliptic package 6.5.2 for Node.js allows ECDSA signature malleability via variations in encoding, leading '\0' bytes, or […]

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Common Problems 114545

RHEL 9: dnf Transaction Fails Due to Package Conflicts

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 2025 📖 ~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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AlmaLinux 9 — poppler — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — poppler — multiple vulnerabilities (4 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-2026:0126 Related CVEs: CVE-2025-32365 CVE-2024-6239 CVE-2022-38784 CVE-2022-27337 Upstream summary: Poppler is a Portable Document Format (PDF) rendering library, used by applications such as Evince. Security Fix(es): * poppler: Out-of-Bounds Read in Poppler […]

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Common Problems 119534

Debian 13 – sudo fails in automation with no tty present

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 2025 Affected versions: Debian 13 Debian 13 (Trixie) Debian 13.x 📖 ~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 116997

Ubuntu 22.04 NGINX Fails to Start Due to Port 80 Conflict

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 2025 📖 ~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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