PHP 8.4 is the latest stable release of PHP, bringing property hooks, new array functions, improved JIT performance, and deprecation of outdated features. This guide installs PHP 8.4 on Ubuntu 26.04 LTS using both the default Ubuntu repositories and the popular Ondrej Sury PPA. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]
🟡 Medium ⏱ 5–30 min Last verified: 31 July 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]
🟠 High ⏱ 5–30 min Last verified: 31 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 […]
🟠 High ⏱ 15–60 min Last verified: 31 July 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8182-1 Related CVEs: CVE-2026-34785 CVE-2026-26962 CVE-2026-26961 CVE-2026-34230 CVE-2026-34830 CVE-2026-34763 CVE-2026-34827 CVE-2026-32762 +12 more Upstream summary: Andrew Lacambra discovered that Rack did not properly parse certain regular expressions. An attacker could […]
🟠 High ⏱ 15–60 min Last verified: 31 July 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8155-1 Related CVEs: CVE-2026-28387 CVE-2026-2673 CVE-2026-31790 CVE-2026-28388 CVE-2026-28389 CVE-2026-31789 CVE-2026-28390 CVE-2026-22796 +12 more Upstream summary: Viktor Dukhovni discovered that OpenSSL incorrectly negotiated the expected preferred key exchange group when used […]
🟡 Medium ⏱ 5–30 min Last verified: 31 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 […]
🟠 High ⏱ 15–60 min Last verified: 31 July 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8145-5 Related CVEs: CVE-2024-46777 CVE-2025-21735 CVE-2025-37849 CVE-2026-23060 CVE-2026-23074 CVE-2021-47599 CVE-2022-48875 CVE-2022-49267 +12 more Upstream summary: Several security issues were discovered in the Linux kernel. An attacker could possibly use these […]
🟠 High ⏱ 15–60 min Last verified: 31 July 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8269-1 Related CVEs: CVE-2026-24401 CVE-2026-34933 CVE-2025-68276 CVE-2025-68468 CVE-2025-68471 CVE-2023-38469 CVE-2023-38470 CVE-2023-38471 +7 more Upstream summary: It is discovered that Avahi incorrectly handled crafted input. A remote attacker could possibly use […]
Let’s Encrypt provides free, automated, and open TLS certificates. Certbot is the official Let’s Encrypt client that automates certificate issuance and renewal. This guide installs Certbot on Ubuntu 26.04 LTS and manages SSL certificates for Nginx and Apache. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Nginx or Apache installed A […]
🟡 Medium ⏱ 5–30 min Last verified: 30 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 […]
