Security Hardening

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-2026-50134)

🟠 High   ⏱ 15–60 min  Last verified: 20 September 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50134 Related CVEs: CVE-2025-40215 CVE-2025-40256 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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How to Install Git on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Git on Debian 13

Introduction How to Install Git on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie 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 tutorial […]

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Amazon Linux 2 — kernel-livepatch-4.14.355-277.643 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.355-277.643 — 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-2025-244 Related CVEs: CVE-2023-53137 CVE-2025-21811 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: ext4: Fix possible corruption when moving a directory (CVE-2023-53137) Table of contents Symptom […]

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NetBSD 10.0 — instiki — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — instiki — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged instiki<0.13 for vulnerability class 'cross-site-scripting'. Reference: http://rubyforge.org/forum/forum.php?forum_id=22805 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Common Problems 114065

RHEL 10 – SELinux policy module install fails with unresolved type attributes

🟠 High   ⏱ 5–30 min  Last verified: 19 September 2025 Affected versions: RHEL 10 RHEL 10.0 RHEL 10.1 📖 ~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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How to Add and Delete Users on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Add and Delete Users on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying add and delete users on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Add and Delete Users on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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NetBSD 10.0 — acid — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — acid — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged acid-[0-9]* for vulnerability class 'cross-site-scripting'. Reference: http://secunia.com/advisories/17552/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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How to Install Bun on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Bun on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up install bun on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting configuration will persist […]

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FreeBSD 14 — roundcube-php — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 14

FreeBSD 14 — roundcube-php — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 September 2025 Affected versions: FreeBSD 14 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Roundcube Webmail — Multiple vulnerabilities Related CVEs: CVE-2025-49113 Upstream summary: The Roundcube Webmail project reports: See link for details. No CVE numbers available at the moment. Table of contents Symptom […]

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NetBSD 10.0 — ruby24-base — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — ruby24-base — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2019-8324 CVE-2017-0898 CVE-2017-10784 CVE-2017-0899 CVE-2017-0900 CVE-2017-0901 CVE-2017-0902 CVE-2017-17790  +12 more Upstream summary: pkgsrc audit-packages flagged ruby24-base<2.4.5nb1 for vulnerability class 'arbitrary-code-execution'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2019-8324 Table of contents Symptom & Impact Environment […]

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