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Debian 11 — mhc — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mhc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0120 Upstream summary: adb2mhc in the mhc-utils package before 0.25+20010625-7.1 allows local users to overwrite arbitrary files via a symlink attack on a default temporary directory with a […]

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Common Problems 120469

Debian 11 Stuck at GRUB Prompt After Kernel Update

🟠 High   ⏱ 5–30 min  Last verified: 16 April 2022 Affected versions: Debian 11 📖 ~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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How to Set Up a Multi-Node Kubernetes Cluster on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up a Multi-Node Kubernetes Cluster on SLES 15

Introduction This tutorial covers How to Set Up a Multi-Node Kubernetes Cluster on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Disable Swap swapoff -a sed -i […]

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AlmaLinux 8 — uom-systems — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — uom-systems — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:0290 Related CVEs: CVE-2021-4104 CVE-2022-23302 CVE-2022-23305 CVE-2022-23307 Upstream summary: Parfait is a Java performance monitoring library that collects metrics and exposes them through a variety of outputs. It provides APIs for extracting […]

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Ubuntu 20.04 — underscore — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — underscore — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4913-1 Related CVEs: CVE-2021-23358 Upstream summary: It was discovered that Underscore incorrectly handled certain inputs. An attacker could possibly use this issue to inject arbitrary code. Table of contents Symptom […]

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Ubuntu 20.04 — zsh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — zsh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5325-1 Related CVEs: CVE-2019-20044 CVE-2021-45444 Upstream summary: Sam Foxman discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this issue to regain dropped privileges. (CVE-2019-20044) It was […]

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Oracle Linux 8 — polkit — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — polkit — vulnerability — patch and remediation guide (ELSA-2021-2238)

🟠 High   ⏱ 15–60 min  Last verified: 16 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-2238 Related CVEs: CVE-2021-3560 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 112448

Windows Server 2019 — WinSxS Growth Exhausts C: and Breaks Patch Installation — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 April 2022 Affected versions: Windows Server 2019 📖 ~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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How to Configure StrongSwan IPsec on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure StrongSwan IPsec on Debian 11

Introduction Deploying configure strongswan ipsec on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian 11 […]

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