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How to Install PHP 8.3 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install PHP 8.3 on RHEL 9

PHP is the dominant server-side scripting language powering WordPress, Laravel, Drupal, Magento, and thousands of other web applications. RHEL 9 ships with PHP 8.1 by default, but the Remi repository provides the latest PHP releases including PHP 8.3. PHP 8.3 introduced typed class constants, new json_validate() function, and further performance improvements over PHP 8.2. The […]

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Debian 11 — udunits — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — udunits — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3560 CVE-2009-3720 Upstream summary: The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a […]

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How to Use Skopeo for Container Image Management on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Use Skopeo for Container Image Management on Debian 11

Introduction This guide explains how to Use Skopeo for Container Image Management on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install […]

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Gentoo Linux — net-fs/netatalk — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-fs/netatalk — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202311-02 Related CVEs: CVE-2021-31439 CVE-2022-0194 CVE-2022-22995 CVE-2022-23121 CVE-2022-23122 CVE-2022-23123 CVE-2022-23124 CVE-2022-23125  +1 more Upstream summary: Multiple vulnerabilities have been discovered in Netatalk. Please review the CVE identifiers referenced below for details. Table […]

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How to Monitor Power System Hardware Faults on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Monitor Power System Hardware Faults on IBM AIX 7.3

Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to monitor power system hardware faults on IBM AIX 7.3 […]

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Oracle Linux 8 — xorg-x11-server — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — xorg-x11-server — security and stability fixes — required update (ELSA-2023-6916)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6916 Related CVEs: CVE-2023-1393 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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AlmaLinux 8 — libcdio — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libcdio — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2019:3462 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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