Linux

Ubuntu 18.04 — simgear — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — simgear — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 October 2025 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7965-1 Related CVEs: CVE-2025-0781 Upstream summary: It was discovered that SimGear could be made to bypass the sandboxing of Nasal scripts. An attacker could possibly use this issue to execute […]

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Alpine Linux 3.19 — libxslt — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — libxslt — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 1.1.39-r1 📖 ~4 min read  •  Source: Alpine secdb entry — libxslt 1.1.39-r1 Related CVEs: CVE-2024-55549 CVE-2025-24855 CVE-2021-30560 CVE-2019-13117 CVE-2019-13118 CVE-2019-18197 CVE-2019-11068 CVE-2017-5029  +1 more Upstream summary: Alpine main repository for vv3.19 ships libxslt 1.1.39-r1 which […]

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Common Problems 116406

Ubuntu 24.04 LTS – do-release-upgrade blocked by held packages – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 October 2025 Affected versions: Ubuntu 24.04 LTS 📖 ~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 Related Errors […]

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How to Monitor PostgreSQL with postgres_exporter on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Monitor PostgreSQL with postgres_exporter on Debian 13

Introduction This guide explains how to Monitor PostgreSQL with postgres_exporter on Debian 13 on Debian 13 Trixie. Debian Trixie 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 13 install with the […]

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Ubuntu 20.04 — poppler — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — poppler — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 October 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7858-1 Related CVEs: CVE-2025-52885 CVE-2025-50420 CVE-2025-52886 CVE-2022-27337 CVE-2025-43903 CVE-2025-32364 CVE-2025-32365 CVE-2024-56378  +9 more Upstream summary: It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use […]

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Rocky Linux 8 — redis — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — redis — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2025:19238 Related CVEs: CVE-2025-46817 CVE-2025-46818 CVE-2025-46819 CVE-2025-49844 Upstream summary: Redis is an advanced key-value store. It is often referred to as a data-structure server since keys can contain strings, hashes, […]

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Oracle Linux 10 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — firefox — vulnerability — patch and remediation guide (ELSA-2025-7491)

🟠 High   ⏱ 15–60 min  Last verified: 4 October 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7491 Related CVEs: CVE-2025-3028 CVE-2025-3029 CVE-2025-3030 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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Oracle Linux 8 — grafana — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grafana — vulnerability — patch and remediation guide (ELSA-2025-7894)

🟠 High   ⏱ 15–60 min  Last verified: 4 October 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7894 Related CVEs: CVE-2025-4123 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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How to Manage Docker Images and Containers on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Deploy Applications with Docker Compose on Ubuntu 24.04

Docker Compose simplifies deploying multi-service applications. This guide walks through creating a production-ready Docker Compose deployment for a LEMP stack (Nginx, MySQL, PHP) on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Docker Engine and Docker Compose plugin installed A user in the docker group Step 1 – […]

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CentOS Stream 9 — httpd — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — httpd — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 October 2025 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:23919 Related CVEs: CVE-2025-58098 CVE-2025-65082 CVE-2025-66200 CVE-2024-38476 CVE-2024-38473 CVE-2024-38474 CVE-2024-38475 CVE-2024-38477  +12 more Upstream summary: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Security […]

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