ubuntu

Ubuntu 22.04 — gst-plugins-good1.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — gst-plugins-good1.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 July 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8131-1 Related CVEs: CVE-2026-3083 CVE-2026-3085 CVE-2025-47183 CVE-2025-47219 CVE-2024-47537 CVE-2024-47539 CVE-2024-47540 CVE-2024-47543  +12 more Upstream summary: It was discovered that GStreamer Good Plugins incorrectly handled certain X-QDM RTP payloads. A remote […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 28 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8223-1 Related CVEs: CVE-2024-38357 CVE-2024-38356 CVE-2024-42008 CVE-2024-42010 CVE-2026-26079 CVE-2026-25916 CVE-2019-15237 CVE-2025-68461  +2 more Upstream summary: It was discovered that Roundcube Webmail mishandled Punycode xn-- domain names. An attacker could possibly […]

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Ubuntu 24.04 — mako — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — mako — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8234-1 Related CVEs: CVE-2026-41205 Upstream summary: It was discovered that Mako incorrectly handled URIs with double-slash prefixes in TemplateLookup. A remote attacker could possibly use this issue to obtain sensitive […]

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How to Set Up a Git Server with Gitea on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Vagrant and VirtualBox on Ubuntu 26.04

Vagrant is a tool for building and managing virtual machine environments. Combined with VirtualBox as the hypervisor, Vagrant lets developers spin up reproducible development environments from a simple Vagrantfile configuration. This guide installs Vagrant and VirtualBox on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS (desktop or server with […]

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Common Problems 116095

Ubuntu 26.04 LTS – Failed unattended-upgrades due to mirror timeout – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 27 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 […]

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How to Set Up a DNS Server with Bind9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up a DNS Server with Bind9 on Ubuntu 26.04

BIND9 (Berkeley Internet Name Domain) is the most widely deployed DNS server software. It handles both authoritative DNS (serving zone records for your domains) and recursive DNS (resolving queries for clients). This guide installs BIND9 on Ubuntu 26.04 LTS as a caching/forwarding resolver. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS A […]

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Common Problems 116047

Ubuntu 26.04 LTS – OpenSSH login denied due to strict AllowUsers policy – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 27 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 […]

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Ubuntu 24.04 — python-tornado — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — python-tornado — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8198-1 Related CVEs: CVE-2026-31958 CVE-2026-35536 CVE-2025-67724 CVE-2025-67725 CVE-2025-67726 CVE-2025-47287 CVE-2023-28370 CVE-2024-52804 Upstream summary: It was discovered that Tornado incorrectly handled parsing of large multipart request bodies. An attacker could possibly […]

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Ubuntu 24.04 — openjdk-8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — openjdk-8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 27 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8000-1 Related CVEs: CVE-2026-21932 CVE-2026-21925 CVE-2026-21933 CVE-2026-21945 CVE-2025-53057 CVE-2025-53066 CVE-2025-30749 CVE-2025-30761  +12 more Upstream summary: It was discovered that the RMI component of OpenJDK 8 would establish RMI TCP endpoint […]

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Ubuntu 16.04 — kmod — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — kmod — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 July 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8226-2 Related CVEs: CVE-2026-31431 Upstream summary: USN-8226-1 added a mitigation to kmod to disable loading the algif_aead module. This update adds the same mitigation to Ubuntu 14.04 LTS, Ubuntu 16.04 […]

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