Kernel Drivers

How to Configure Grafana Alerting on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Grafana Alerting on Debian 12

Introduction This guide explains how to Configure Grafana Alerting on Debian 12 on Debian 12 Bookworm. Debian Bookworm uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 12 install with the standard […]

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Common Problems 120166

Debian 12 Kernel Module Missing After Point Release Upgrade

🟠 High   ⏱ 5–30 min  Last verified: 10 November 2023 Affected versions: Debian 12 📖 ~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 Configure restic Backup Solution on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure restic Backup Solution on Debian 12

Introduction Deploying configure restic backup solution on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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Amazon Linux 2 — kernel-livepatch-4.14.322-246.539 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.322-246.539 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-157 Related CVEs: CVE-2023-45871 CVE-2023-4207 CVE-2023-4622 CVE-2023-4623 CVE-2023-4921 Upstream summary: An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c in the IGB driver in the Linux kernel before 6.5.3. A buffer size may […]

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NetBSD 9.4 — xenkernel41 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — xenkernel41 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2013-1432 CVE-2013-6885 Upstream summary: pkgsrc audit-packages flagged xenkernel41<4.1.6.1 for vulnerability class 'privilege-escalation'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1432 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2024-12169)

🟠 High   ⏱ 15–60 min  Last verified: 9 November 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12169 Related CVEs: CVE-2023-6536 CVE-2023-40283 CVE-2023-1073 CVE-2023-4921 CVE-2023-1838 CVE-2022-3545 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Configure SSH Hardening on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure SSH Hardening on Debian 12

Introduction How to Configure SSH Hardening on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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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Common Problems 124597

Oracle Linux 9 – Common Problem 014 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 8 November 2023 Affected versions: Oracle Linux 9 📖 ~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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How to Install Jenkins on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Jenkins on Debian 12

Introduction Deploying install jenkins on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need a […]

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How to Configure HTTP/2 on Nginx on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure HTTP/2 on Nginx on Debian 12

Introduction This guide explains how to Configure HTTP/2 on Nginx on Debian 12 on Debian 12 Bookworm. Debian Bookworm uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 12 install with the […]

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