MySQL 9 brings improved performance, enhanced JSON support, and better replication capabilities over previous versions. Ubuntu 26.04 LTS includes MySQL 9 in its default repositories, making installation straightforward. This guide installs, secures, and verifies MySQL 9. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges Step 1 […]
MySQL primary-replica replication asynchronously copies data from a primary server to one or more replica servers. This improves read scalability, provides a hot standby for disaster recovery, and enables backups from the replica without impacting the primary. This guide sets up replication on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Two […]
🟡 Medium ⏱ 5–30 min Last verified: 3 May 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 […]
🟠 High ⏱ 15–60 min Last verified: 3 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7742-1 Related CVEs: CVE-2025-32988 CVE-2025-32990 CVE-2025-6395 CVE-2021-4209 https://launchpad.net/bugs/1860656 https://launchpad.net/bugs/1858691 CVE-2018-10844 CVE-2018-10845 +11 more Upstream summary: It was discovered that GnuTLS incorrectly handled exporting Subject Alternative Name (SAN) entries containing an […]
🟢 Low ⏱ 5–15 min Last verified: 3 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7976-1 Related CVEs: CVE-2025-7783 Upstream summary: Ben Shonaldmann discovered that Form-data incorrectly generated boundary values for multipart form-encoded data, leading to predictable values. A remote attacker could possibly use this […]
🟠 High ⏱ 5–30 min Last verified: 2 May 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 […]
MariaDB is a community-developed, drop-in replacement for MySQL with additional storage engines and performance improvements. MariaDB 11 is the latest major release with enhanced features. This guide installs and secures MariaDB 11 on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges Step 1 […]
🟠 High ⏱ 15–60 min Last verified: 2 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8175-1 Related CVEs: CVE-2026-5107 CVE-2025-61103 CVE-2025-61099 CVE-2025-61106 CVE-2025-61100 CVE-2025-61104 CVE-2025-61102 CVE-2025-61101 +12 more Upstream summary: It was discovered that FRR did not correctly handle certain network requests. A remote attacker […]
🟠 High ⏱ 15–60 min Last verified: 2 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8154-1 Related CVEs: CVE-2026-4277 CVE-2026-33034 CVE-2026-33033 CVE-2026-3902 CVE-2026-4292 CVE-2026-1312 CVE-2025-13473 CVE-2026-1287 +12 more Upstream summary: Seokchan Yoon discovered that Django incorrectly handled copying memory when parsing multipart uploads with excessive […]
🟠 High ⏱ 15–60 min Last verified: 2 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8278-1 Related CVEs: CVE-2024-50004 CVE-2024-58096 CVE-2024-58097 CVE-2025-37926 CVE-2025-38201 CVE-2025-38591 CVE-2025-40039 CVE-2025-40082 +12 more Upstream summary: It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic […]
