Kernel Drivers

NetBSD 9.4 — xenkernel43 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — xenkernel43 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged xenkernel43-[0-9]* for vulnerability class 'eol'. Reference: https://ftp.NetBSD.org/pub/NetBSD/packages/vulns/eol-packages Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Debian 12 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 June 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-1320 CVE-2007-1321 CVE-2007-1322 CVE-2007-1366 CVE-2007-5729 CVE-2007-5730 CVE-2008-0928 CVE-2008-1945  +12 more Upstream summary: Multiple heap-based buffer overflows in the cirrus_invalidate_region function in the Cirrus VGA extension in QEMU 0.8.2, […]

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How to Configure Automatic Security Updates on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Automatic Security Updates on Oracle Linux 9

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

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NetBSD 9.4 — xentools415 — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — xentools415 — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2022-42323 CVE-2022-42322 CVE-2022-42309 CVE-2022-42326 CVE-2022-42325 CVE-2022-42321 CVE-2022-42319 CVE-2022-42320  +9 more Upstream summary: pkgsrc audit-packages flagged xentools415-[0-9]* for vulnerability class 'arbitrary-memory-access'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-42323 Table of contents Symptom & Impact Environment […]

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How to Configure StrongSwan IPsec on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure StrongSwan IPsec on Debian 12

Introduction How to Configure StrongSwan IPsec 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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How to Set Up Kea DHCP Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up Kea DHCP Server on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up kea dhcp server 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. Follow each step carefully […]

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How to Configure Active Directory Sites and Services on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Active Directory Sites and Services on Windows Server 2022

How to Install and Configure IIS on Windows Server 2022 Internet Information Services (IIS) is Microsoft’s web server platform included with Windows Server 2022. It supports HTTP, HTTPS, FTP, FTPS, SMTP, and NNTP protocols and integrates deeply with the Windows ecosystem. This guide walks through a complete IIS installation and configuration from a clean Windows […]

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How to Set Up OpenVSwitch on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up OpenVSwitch on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying set up openvswitch on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up OpenVSwitch on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Install and Configure Samba File Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Configure Samba File Server on Debian 12

Introduction How to Install and Configure Samba File Server 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 […]

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Amazon Linux 2 — kernel-livepatch-5.10.118-111.515 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.118-111.515 — multiple vulnerabilities (2 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-2022-089 Related CVEs: CVE-2022-34918 CVE-2022-1966 Upstream summary: A heap buffer overflow flaw was found in the Linux kernel's Netfilter subsystem in the way a user provides incorrect input of the […]

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