ubuntu

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

How to Set Up a Git Server with Gitea on Ubuntu 26.04

Gitea is a lightweight, self-hosted Git service written in Go. It provides a GitHub-like interface with repositories, issues, pull requests, and actions CI/CD, but runs on minimal hardware. This guide installs Gitea on Ubuntu 26.04 LTS with Nginx and a PostgreSQL database. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Nginx […]

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Ubuntu 18.04 — mupdf — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — mupdf — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 26 June 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7888-1 Related CVEs: CVE-2023-51106 CVE-2023-51103 CVE-2024-46657 CVE-2025-46206 CVE-2023-51104 CVE-2023-51105 CVE-2020-26683 CVE-2018-16647  +6 more Upstream summary: It was discovered that MuPDF could be made to divide by zero. An attacker could […]

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Common Problems 115956

Ubuntu 26.04 LTS – Cloud-init rewrites network settings unexpectedly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 25 June 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 — gpsd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — gpsd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 June 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7948-1 Related CVEs: CVE-2025-67268 CVE-2025-67269 Upstream summary: It was discovered that GPSd incorrectly handled processing NMEA2000 packets. An attacker could use this issue to cause GPSd to crash, resulting in […]

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Common Problems 115936

Ubuntu 26.04 LTS – UFW blocks required inbound service ports – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 25 June 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 — linux-nvidia-tegra — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — linux-nvidia-tegra — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 June 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8254-3 Related CVEs: CVE-2026-23112 CVE-2026-23231 CVE-2026-23273 CVE-2024-36347 CVE-2024-57795 CVE-2025-22022 CVE-2025-22111 CVE-2025-38022  +12 more Upstream summary: Several security issues were discovered in the Linux kernel. An attacker could possibly use these […]

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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 Install and Configure Dovecot IMAP Server on Ubuntu 26.04

Dovecot is a secure, open-source IMAP and POP3 server. It allows email clients to retrieve messages stored on the server. Combined with Postfix, Dovecot completes a full mail server stack. This guide installs Dovecot on Ubuntu 26.04 LTS with TLS and Maildir storage. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with […]

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Common Problems 116067

Ubuntu 26.04 LTS – rsyslog not forwarding logs to remote collector – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 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 20.04 — linux-gcp-fips — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-gcp-fips — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 June 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8273-1 Related CVEs: CVE-2024-50304 CVE-2026-23112 CVE-2026-23209 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533 CVE-2026-43033 CVE-2026-43077  +12 more Upstream summary: Several security issues were discovered in the Linux kernel. An attacker could possibly use these […]

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How to Set Up a Private Docker Registry on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Portainer for Docker Management on Ubuntu 26.04

Portainer is an open-source container management UI that provides a web-based dashboard for managing Docker containers, images, volumes, networks, and stacks. It is available as a free Community Edition (CE). This guide installs Portainer CE on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Docker Engine installed A […]

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