🔴 Critical ⏱ 5–30 min Last verified: 19 July 2026 Affected versions: Ubuntu 26.04 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 […]
🟢 Low ⏱ 5–15 min Last verified: 19 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7838-1 Related CVEs: CVE-2025-61962 Upstream summary: It was discovered that the fetchmail SMTP client incorrectly handled certain status code messages. An attacker controlling a malicious server could possibly use this […]
🟡 Medium ⏱ 10–30 min Last verified: 19 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7878-1 Related CVEs: CVE-2025-64503 CVE-2025-57812 CVE-2025-64524 Upstream summary: It was discovered that cups-filters incorrectly handled certain malformed TIFF image files. A remote attacker could use this issue to cause cups-filters […]
A private Docker registry lets you store and distribute container images within your own infrastructure, avoiding Docker Hub rate limits and keeping proprietary images secure. This guide sets up a private Docker registry with TLS and basic authentication on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Docker […]
🟡 Medium ⏱ 5–30 min Last verified: 18 July 2026 Affected versions: Ubuntu 26.04 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 […]
Jupyter Notebook is an open-source web application for creating interactive computational documents that combine live code, equations, visualisations, and markdown text. It is widely used for data science, machine learning, and scientific computing. This guide installs Jupyter Notebook on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Python […]
Managing Docker images and containers effectively is a core skill for any developer or sysadmin working with containers. This guide covers the essential commands for building, tagging, pushing, listing, inspecting, and cleaning up Docker images and containers on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Docker Engine […]
🟠 High ⏱ 15–60 min Last verified: 18 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7994-1 Related CVEs: CVE-2026-21937 CVE-2026-21948 CVE-2026-21968 CVE-2026-21941 CVE-2026-21936 CVE-2026-21964 CVE-2025-53054 CVE-2025-53040 +12 more Upstream summary: Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions […]
🟢 Low ⏱ 5–15 min Last verified: 18 July 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8168-2 Related CVEs: CVE-2026-33056 Upstream summary: USN-8168-1 fixed a vulnerability in Rust. This update provides the corresponding update to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu […]
🟢 Low ⏱ 5–15 min Last verified: 18 July 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8256-1 Related CVEs: CVE-2026-41082 Upstream summary: Andrew Nesbitt discovered that opam did not properly validate file destination paths in package install files. An attacker could use this issue to bypass […]
