Kernel Drivers

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

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2024-12581)

  • February 15, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 15 February 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12581 Related CVEs: CVE-2024-36015 CVE-2024-37353 CVE-2024-38582 CVE-2024-35976 CVE-2024-38618 CVE-2024-39503 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 ModSecurity WAF with Apache2 on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure ModSecurity WAF with Apache2 on Debian 12

  • February 14, 2024
  • Linux
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Introduction How to Configure ModSecurity WAF with Apache2 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 […]

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Amazon Linux 2023 — kernel-livepatch-6.1.38-59.109 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.38-59.109 — vulnerability — patch and remediation guide

  • February 13, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-011 Related CVEs: CVE-2023-3776 Upstream summary: A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately […]

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How to Enable FIPS Mode on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Enable FIPS Mode on Debian 12

  • February 12, 2024
  • Linux
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Introduction This guide explains how to Enable FIPS Mode 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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How to Monitor ZFS Pool Health on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Monitor ZFS Pool Health on FreeBSD 14

  • February 8, 2024
  • FreeBSD
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Introduction How to Monitor ZFS Pool Health on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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How to Set Up Grafana Alerting on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up Grafana Alerting on FreeBSD 14

  • February 8, 2024
  • FreeBSD
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Introduction How to Set Up Grafana Alerting on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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How to Configure Apache2 MPM Worker on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Apache2 MPM Worker on Debian 12

  • February 8, 2024
  • Linux
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Introduction How to Configure Apache2 MPM Worker 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. […]

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How to Set Up SSH Key Authentication on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up SSH Key Authentication on Debian 12

  • February 8, 2024
  • Linux
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Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up set up ssh key authentication 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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Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2024-12618)

  • February 7, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 7 February 2024 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12618 Related CVEs: CVE-2024-40911 CVE-2024-40947 CVE-2024-40978 CVE-2024-40981 CVE-2024-41027 CVE-2024-41049 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2024-12547)

  • January 31, 2024
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 31 January 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12547 Related CVEs: CVE-2024-41090 CVE-2024-41091 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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