Troubleshooting

Arch Linux — lib32-libpng — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lib32-libpng — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201701-5 Related CVEs: CVE-2016-10087 Upstream summary: Type: denial of service. Status: Fixed. Affected: 1.6.26-1. Fixed in: 1.6.27-1. Group: AVG-120. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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SLES 15 — python2-pywbem — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python2-pywbem — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2014:0580-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-6418 Upstream summary: PyWBEM 0.7 and earlier uses a separate connection to validate X.509 certificates, which allows man-in-the-middle attackers to spoof a peer via an […]

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SLES 15 — jackson-databind — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — jackson-databind — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 27 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2018-11307 CVE-2018-14718 CVE-2018-14721 CVE-2018-19360 CVE-2018-19361 CVE-2018-19362 CVE-2018-7489 CVE-2019-14379  +12 more Upstream summary: An issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.5. Use of Jackson default typing along with […]

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

Arch Linux — libofx — multiple vulnerabilities (2 CVEs) — 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-201805-19 Related CVEs: CVE-2017-14731 CVE-2017-2816 Upstream summary: Type: denial of service. Status: Fixed. Affected: 0.9.12-1. Fixed in: 0.9.13-1. Group: AVG-536. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How to Configure Kubernetes RBAC on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Kubernetes RBAC on RHEL 8

Role-Based Access Control (RBAC) is the primary authorization mechanism in Kubernetes, allowing you to define exactly which users and service accounts can perform which actions on which resources. On RHEL 8 clusters this is especially important when multiple teams share the same cluster or when you need to grant applications only the permissions they need […]

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Common Problems 118569

Ubuntu 16.04 LTS Drops to initramfs BusyBox on Boot

🟠 High   ⏱ 5–30 min  Last verified: 26 December 2019 Affected versions: 16.04 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 114943

RHEL 8 NetworkManager profile not auto-connecting after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 26 December 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 & Cross-Refs References & Further […]

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How to Configure Multipath I/O on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Multipath I/O on SLES 12

Introduction This tutorial covers How to Configure Multipath I/O on SLES 12 on SLES 12. SLES 12 (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 12 system is up to date: zypper refresh […]

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Common Problems 114940

Application port blocked by firewalld

🟡 Medium   ⏱ 5–30 min  Last verified: 26 December 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 & Cross-Refs References & Further […]

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openSUSE Tumbleweed — pan — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — pan — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2008:013 (see also SUSE bugzilla) Related CVEs: CVE-2008-2363 Upstream summary: The PartsBatch class in Pan 0.132 and earlier does not properly manage the data structures for Parts batches, which allows remote attackers […]

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