ubuntu

Common Problems 116496

Ubuntu 24.04 LTS – GRUB menu missing after update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 December 2024 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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Ubuntu 16.04 — twisted — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — twisted — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 December 2024 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6988-1 Related CVEs: CVE-2024-41671 CVE-2024-41810 CVE-2022-21716 CVE-2019-12387 CVE-2019-12855 CVE-2019-9512 CVE-2019-9514 CVE-2019-9515  +3 more Upstream summary: Ben Kallus discovered that Twisted incorrectly handled response order when processing multiple HTTP requests. A […]

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How To Install the Etherpad Collaborative Web Editor on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Install the Etherpad Collaborative Web Editor on Ubuntu 20.04

Etherpad is a web application that enables real-time collaborative text editing in the browser. It is written in Node.js and can use a variety of database engines to store data. In this tutorial we will install Etherpad on an Ubuntu 20.04 server, using an SQLite database. We’ll also use Nginx to reverse proxy the application, and Certbot to fetch and install Let’s Encrypt SSL certificates.

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Ubuntu 16.04 — libcdio — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libcdio — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 December 2024 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6855-1 Related CVEs: CVE-2024-36600 CVE-2017-18198 CVE-2017-18199 Upstream summary: Mansour Gashasbi discovered that libcdio incorrectly handled certain memory operations when parsing an ISO file, leading to a buffer overflow vulnerability. An […]

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Ubuntu 24.04 — tomcat9 — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — tomcat9 — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 December 2024 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7562-1 Related CVEs: CVE-2024-24549 CVE-2024-34750 CVE-2024-23672 CVE-2023-42795 CVE-2024-38286 CVE-2023-45648 CVE-2023-28708 CVE-2024-21733  +2 more Upstream summary: It was discovered that Tomcat did not include the secure attribute for session cookies when […]

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Common Problems 116534

Ubuntu 24.04 LTS – Docker permission denied on /var/run/docker.sock – Fix & Prevention (FIX-PREVENTION-2)

🟡 Medium   ⏱ 5–30 min  Last verified: 20 December 2024 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 Configure a Static IP Address with Netplan on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Java 21 (OpenJDK) on Ubuntu 24.04

Java 21 LTS is the current Long-Term Support release of Java, featuring virtual threads (Project Loom), pattern matching, and record patterns. This guide installs OpenJDK 21 on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Install OpenJDK 21 OpenJDK 21 […]

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How to Configure Unattended Upgrades on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Sync Time with systemd-timesyncd on Ubuntu 24.04

Accurate system time is critical for SSL certificates, logs, cron jobs, and distributed systems. Ubuntu 24.04 LTS uses systemd-timesyncd as the default NTP client. This guide shows you how to configure and verify time synchronisation. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Internet connectivity Step […]

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Common Problems 116503

Ubuntu 24.04 LTS – Bluetooth unavailable after suspend and resume – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 December 2024 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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