Kernel Drivers

Amazon Linux 2023 — kernel-livepatch-6.1.27-43.48 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.27-43.48 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-016 Related CVEs: CVE-2023-2156 CVE-2023-3090 CVE-2023-35788 CVE-2022-48425 CVE-2023-32233 Upstream summary: A flaw was found in the Linux kernel's networking subsystem within the RPL protocol's handling. This issue results from the […]

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Amazon Linux 2 — kernel-livepatch-4.14.305-227.531 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.305-227.531 — vulnerability — 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-2023-112 Related CVEs: CVE-2023-26545 Upstream summary: In the Linux kernel before 6.1.13, there is a double free in net/mpls/af_mpls.c upon an allocation failure (for registering the sysctl table under a […]

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How to Configure AppArmor on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure AppArmor on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying configure apparmor on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure AppArmor on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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Amazon Linux 2 — kernel-livepatch-4.14.343-259.562 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.343-259.562 — vulnerability — 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-2024-173 Related CVEs: CVE-2023-52628 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of […]

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How to Mount NFS Shares at Boot on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Mount NFS Shares at Boot on Debian 12

Introduction This guide explains how to Mount NFS Shares at Boot 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 […]

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How to Configure MySQL Group Replication on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure MySQL Group Replication on Oracle Linux 9

Introduction How to Configure MySQL Group Replication on Oracle Linux 9 on Oracle Linux 9 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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How to Set Up a Local Kubernetes Dev Cluster with Kind on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up a Local Kubernetes Dev Cluster with Kind on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up a local kubernetes dev cluster with kind on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. […]

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Oracle Linux 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-6003)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 August 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6003 Related CVEs: CVE-2022-1055 CVE-2022-0494 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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Amazon Linux 2 — kernel-livepatch-5.10.196-185.743 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.196-185.743 — vulnerability — 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-2023-156 Related CVEs: CVE-2023-5197 Upstream summary: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Addition and removal of rules from […]

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How to Perform a CIS Benchmark Audit on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Perform a CIS Benchmark Audit on Debian 12

Introduction This guide explains how to Perform a CIS Benchmark Audit 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 […]

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