Linux

Common Problems 115102

RHEL 8 kdump Fails to Save vmcore After Kernel Panic

🔴 Critical   ⏱ 5–30 min  Last verified: 2 January 2025 Affected versions: 8.6 8.7 8.8 8.9 8.10 📖 ~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 & Hardening […]

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-8315 CVE-2024-21633 Upstream summary: Eclipse XML parser for the Eclipse IDE versions 2017.2.5 and earlier was found vulnerable to an XML External Entity attack. An attacker can exploit […]

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How to Set Up Software RAID with mdadm on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Prometheus and Grafana on Ubuntu 24.04

Prometheus is a powerful time-series monitoring system and Grafana is the leading visualisation dashboard. Together they form the most popular open-source monitoring stack. This guide installs both on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Minimum 2 GB RAM Step 1 – […]

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Ubuntu 24.04 — ceph — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — ceph — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 January 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8045-1 Related CVEs: CVE-2024-31884 CVE-2024-47866 CVE-2024-48916 Upstream summary: Martin Schobert discovered that Ceph did not properly verify SSL certificates when using Pybind for secure mail connections, which could result in […]

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How to Secure MySQL 8.0 on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install phpMyAdmin on Ubuntu 24.04

phpMyAdmin is a free web-based interface for managing MySQL/MariaDB databases. This guide installs phpMyAdmin on Ubuntu 24.04 LTS with Nginx and PHP 8.3. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Nginx, MySQL, PHP 8.3-FPM installed A user with sudo privileges Step 1 – Install phpMyAdmin Install from the Ubuntu repository: […]

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Alpine Linux 3.19 — cracklib — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — cracklib — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 2.9.7-r0 📖 ~4 min read  •  Source: Alpine secdb entry — cracklib 2.9.7-r0 Related CVEs: CVE-2016-6318 Upstream summary: Alpine main repository for vv3.19 ships cracklib 2.9.7-r0 which addresses CVE-2016-6318. Table of contents Symptom & Impact Environment […]

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Ubuntu 22.04 — requests — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — requests — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2025 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7568-1 Related CVEs: CVE-2024-47081 CVE-2023-32681 Upstream summary: Dennis Brinkrolf and Tobias Funke discovered that Requests did not correctly handle certain HTTP headers. A remote attacker could possibly use this issue […]

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Cómo instalar R en Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Cómo instalar R en Ubuntu 20.04

R es un lenguaje de programación de código abierto que se utiliza ampliamente para realizar análisis de datos e informática estadística. Con el soporte de la R Foundation for Stadistical Computing, es un lenguaje cada vez más popular y extensible con una comunidad activa. R…

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SLES 15 — docker-stable — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — docker-stable — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 5–30 min  Last verified: 2 January 2025 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2025:0226-1 Related CVEs: CVE-2024-2365 Upstream summary: A vulnerability classified as problematic was found in Musicshelf 1.0/1.1 on Android. Affected by this vulnerability is an unknown functionality of the file io\fabric\sdk\android\services\network\PinningTrustManager.java of the […]

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