Security Hardening

Alpine Linux 3.20 — perl-encode — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — perl-encode — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 3.12-r0 📖 ~4 min read  •  Source: Alpine secdb entry — perl-encode 3.12-r0 Related CVEs: CVE-2021-36770 Upstream summary: Alpine main repository for vv3.20 ships perl-encode 3.12-r0 which addresses CVE-2021-36770. Table of contents Symptom & Impact Environment […]

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Common Problems 116554

Ubuntu 24.04 LTS – KVM acceleration unavailable in virtualized hosts – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 October 2025 Affected versions: Ubuntu 24.04 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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Debian 13 — openconnect — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — openconnect — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-5009 CVE-2010-3901 CVE-2010-3902 CVE-2010-3903 CVE-2012-3291 CVE-2012-6128 CVE-2013-7098 CVE-2019-16239  +2 more Upstream summary: Double free vulnerability in OpenConnect before 1.40 might allow remote AnyConnect SSL VPN servers to cause […]

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Debian 13 — obs-build — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — obs-build — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-14804 Upstream summary: The build package before 20171128 did not check directory names during extraction of build results that allowed untrusted builds to write outside of the target system,allowing […]

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Alpine Linux 3.20 — chrony — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — chrony — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 3.5.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — chrony 3.5.1-r0 Related CVEs: CVE-2020-14367 Upstream summary: Alpine main repository for vv3.20 ships chrony 3.5.1-r0 which addresses CVE-2020-14367. Table of contents Symptom & Impact Environment […]

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openSUSE Leap 15.6 — zabbix-ui — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — zabbix-ui — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2024:0384-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-36461 CVE-2024-22114 Upstream summary: Within Zabbix, users have the ability to directly modify memory pointers in the JavaScript engine. Table of contents Symptom & […]

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Common Problems 116497

Ubuntu 24.04 LTS – NVIDIA driver update causes black screen – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 October 2025 Affected versions: Ubuntu 24.04 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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Debian 13 — libjs-bootbox — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libjs-bootbox — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-46998 Upstream summary: Cross Site Scripting vulnerability in BootBox Bootbox.js v.3.2 through 6.0 allows a remote attacker to execute arbitrary code via a crafted payload to alert(), confirm(), prompt() […]

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AlmaLinux 8 — tomcat — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — tomcat — multiple vulnerabilities (20 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-2025:23048 Related CVEs: CVE-2025-31651 CVE-2025-55752 CVE-2025-48976 CVE-2025-48988 CVE-2025-48989 CVE-2025-49125 CVE-2025-52434 CVE-2025-52520  +12 more Upstream summary: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. Security Fix(es): […]

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Debian 12 — icingaweb2-module-director — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — icingaweb2-module-director — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 October 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-24820 CVE-2025-23203 Upstream summary: Icinga Director is a tool designed to make Icinga 2 configuration handling easy. Not any of Icinga Director's configuration forms used to manipulate the […]

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