Ubuntu 22.04

Common Problems 116987

Ubuntu 22.04 UFW Rules Break Docker Container Connectivity

🟡 Medium   ⏱ 5–30 min  Last verified: 6 August 2022 📖 ~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 & Cross-Refs References & Further […]

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Ubuntu 22.04 — pypy3 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — pypy3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 August 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6524-1 Related CVEs: CVE-2022-37454 Upstream summary: Nicky Mouha discovered that PyPy incorrectly handled certain SHA-3 operations. An attacker could possibly use this issue to cause PyPy to crash, resulting in […]

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Common Problems 116984

Ubuntu 22.04 LTS High Memory Use from snapd

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 2022 📖 ~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 & Cross-Refs References & Further […]

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How to Setup a K3s Kubernetes Cluster on Ubuntu 22.04 — step-by-step Kubernetes tutorial on Progressive Robot

How to Setup a K3s Kubernetes Cluster on Ubuntu 22.04

Introduction Kubernetes is among the industry-preferred tools for container orchestration. However, setting up a Kubernetes cluster from scratch could be a daunting task, requiring numerous configurations. Additionally, there are multiple ways to get started with setting up a Kubernetes cluster, but most of them could be time-consuming unless you aim to establish a production-grade cluster. […]

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Common Problems 117083

Ubuntu 22.04 LTS – Docker daemon fails to start after cgroup configuration drift – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 August 2022 Affected versions: Ubuntu 22.04 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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Common Problems 117061

Ubuntu 22.04 LTS – Swap not activating at boot due to bad fstab entry – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 31 July 2022 Affected versions: Ubuntu 22.04 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 22.04 — yara — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — yara — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 July 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7177-1 Related CVEs: CVE-2021-45429 Upstream summary: It was discovered that YARA did not properly sanitize its configuration settings. An attacker could potentially exploit this issue to cause a denial of […]

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Ubuntu 22.04 — nvidia-graphics-drivers-515-server — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — nvidia-graphics-drivers-515-server — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 July 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5547-1 Related CVEs: CVE-2022-31607 CVE-2022-31608 CVE-2022-31615 Upstream summary: Le Wu discovered that the NVIDIA graphics drivers did not properly perform input validation in some situations. A local user could use […]

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Common Problems 117070

Ubuntu 22.04 LTS MySQL Fails to Start Because AppArmor Denies Data Path

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 2022 📖 ~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 & Cross-Refs References & Further […]

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