April 2021 - Page 23 of 66

AlmaLinux 8 — libXt — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libXt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2019:3412 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Oracle Linux 8 — lldpad — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — lldpad — security and stability fixes — required update (ELSA-2019-3673)

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3673 Related CVEs: CVE-2018-10932 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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AlmaLinux 8 — dconf — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — dconf — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1848 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Gentoo Linux — dev-java/oracle-jdk-bin — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-java/oracle-jdk-bin — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202209-15 Related CVEs: CVE-2020-2585 CVE-2020-2755 CVE-2020-2756 CVE-2020-2757 CVE-2020-2773 CVE-2020-2781 CVE-2020-2800 CVE-2020-2803  +12 more Upstream summary: Multiple vulnerabilities have been discovered in Oracle's JDK and JRE software suites. Please review the CVE identifiers […]

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openSUSE Tumbleweed — polkit — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — polkit — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:0190-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-4034 CVE-2021-3560 CVE-2010-0750 CVE-2011-1485 CVE-2015-3255 CVE-2015-3256 CVE-2018-19788 CVE-2019-6133  +4 more Upstream summary: A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec […]

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Common Problems 117479

Ubuntu 20.04 NVIDIA driver install or upgrade issues

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 Use Amanda for Enterprise Backup on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Use Amanda for Enterprise Backup on SLES 15

Introduction This tutorial covers How to Use Amanda for Enterprise Backup 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. Prerequisites Ensure your SLES 15 system is up to date: […]

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Arch Linux — matrix-appservice-irc — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — matrix-appservice-irc — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202106-51 Related CVEs: CVE-2021-32659 Upstream summary: Type: insufficient validation. Status: Fixed. Affected: 0.26.1-1. Fixed in: 0.27.0-1. Group: AVG-2076. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Arch Linux — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201810-10 Related CVEs: CVE-2018-10933 CVE-2020-1730 Upstream summary: Type: authentication bypass. Status: Fixed. Affected: 0.8.3-1. Fixed in: 0.8.4-1. Group: AVG-780. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Enable Credential Guard on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Enable Credential Guard on Windows Server 2012 R2

How to Harden Credential Protection on Windows Server 2012 R2 Protecting credentials from theft is one of the most critical security objectives for any Windows Server environment. Credential Guard, which uses virtualization-based security to isolate credential material from the OS kernel, is a Windows Server 2016 and later feature and is not available on Windows […]

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