Xdebug is an indispensable PHP debugging and profiling extension. Xdebug 3 works with PHP 8.4 and integrates seamlessly with VS Code, PhpStorm, and other IDEs for step-through debugging, stack traces, and code coverage. This guide installs and configures Xdebug 3 on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]
🟠 High ⏱ 5–30 min Last verified: 19 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 […]
🟡 Medium ⏱ 10–30 min Last verified: 19 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7558-1 Related CVEs: CVE-2023-50186 CVE-2024-0444 CVE-2025-3887 CVE-2023-37329 CVE-2023-40474 CVE-2023-40475 CVE-2023-40476 CVE-2023-44429 +1 more Upstream summary: It was discovered that the AV1 codec plugin in GStreamer could be made to write […]
🟠 High ⏱ 15–60 min Last verified: 19 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7679-1 Related CVEs: CVE-2025-6965 CVE-2025-29088 CVE-2022-35737 CVE-2020-35525 CVE-2018-8740 CVE-2019-19603 CVE-2019-19645 CVE-2020-11655 +12 more Upstream summary: It was discovered that SQLite incorrectly handled aggregate terms. An attacker could use this issue […]
🟠 High ⏱ 15–60 min Last verified: 19 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7846-1 Related CVEs: CVE-2025-62230 CVE-2025-62231 CVE-2025-62229 CVE-2025-49175 CVE-2025-49176 CVE-2025-49177 CVE-2025-49178 CVE-2025-49179 +12 more Upstream summary: Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations. An attacker […]
🟠 High ⏱ 5–30 min Last verified: 19 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 ⏱ 5–30 min Last verified: 18 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 […]
Postfixは人気のあるオープンソースのメール転送エージェント（Mail Transfer Agent: MTA）であり、Linuxシステムで電子メールのルーティングや配信に使用できます。インターネット上のパブリックメールサーバーの約25％がPostfixを実行していると推定されます。このガイドでは、Ubuntu 20.04サーバーにPostfixをインストールして設定する方法を学びます。
🟡 Medium ⏱ 10–30 min Last verified: 18 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8202-3 Related CVEs: CVE-2026-40164 https://bugs.launchpad.net/ubuntu/+source/jq/+bug/2152052 CVE-2026-39956 CVE-2026-33947 CVE-2026-39979 CVE-2026-33948 CVE-2026-32316 CVE-2024-23337 +1 more Upstream summary: USN-8202-1 fixed vulnerabilities in jq. The update caused a regression for Ubuntu 18.04 LTS and […]
🟢 Low ⏱ 5–15 min Last verified: 18 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7956-1 Related CVEs: CVE-2025-58181 CVE-2024-45337 Upstream summary: Jakub Ciolek discovered that the Go Cryptography module included in Google Guest Agent did not validate GSSAPI authentication requests during SSH operations. An […]
