ubuntu

Common Problems 116480

Ubuntu 24.04 LTS – Docker permission denied on /var/run/docker.sock – 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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Ubuntu 18.04 — wget — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — wget — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 December 2024 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6852-2 Related CVEs: CVE-2024-38428 CVE-2018-20483 CVE-2019-5953 CVE-2018-0494 Upstream summary: USN-6852-1 fixed a vulnerability in Wget. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original […]

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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 Redis 7.2 on Ubuntu 24.04

Redis 7.2 is an in-memory data store used as a cache, session store, and message broker. Ubuntu 24.04 LTS provides Redis in its repositories. This guide installs and secures it. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Install Redis Install from the […]

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Common Problems 116629

Ubuntu 24.04 LTS APT NO_PUBKEY Repository Signing Key Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 18 December 2024 📖 ~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 & Cross-Refs References & Further […]

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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 Set Up NFS File Sharing on Ubuntu 24.04

NFS (Network File System) allows Linux servers to share directories over the network. Client machines mount NFS shares and access files as if they were local. This guide configures an NFS server and client on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Two Ubuntu 24.04 LTS servers (server and client) on […]

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Ubuntu 16.04 — kdepim — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — kdepim — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 December 2024 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7729-1 Related CVEs: CVE-2020-11880 CVE-2019-10732 CVE-2024-50624 CVE-2017-17689 Upstream summary: Damian Poddebniak, Christian Dresen, Jens Müller, Fabian Ising, Sebastian Schinzel, Simon Friedberger, Juraj Somorovsky, and Jörg Schwenk discovered that the KMail […]

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How to Set Up Two-Factor Authentication (2FA) for SSH on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Manage AppArmor Profiles on Ubuntu 24.04

AppArmor is a Linux Security Module (LSM) built into the Ubuntu kernel that restricts what programs can do. Ubuntu 24.04 LTS ships with AppArmor enabled by default and includes profiles for many common applications. This guide explains how to view, enable, and create AppArmor profiles. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 […]

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Common Problems 117015

Ubuntu 22.04 LTS – GRUB update fails with malformed custom menu entry – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 17 December 2024 Affected versions: Ubuntu 22.04 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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Common Problems 116548

Ubuntu 24.04 LTS Time Sync Fails with systemd-timesyncd

🟠 High   ⏱ 5–30 min  Last verified: 17 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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Common Problems 116517

Ubuntu 24.04 LTS – Bluetooth service fails to start – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 17 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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