Troubleshooting

Common Problems 115390

Yum Lock Held by Another Process on RHEL 7

🟡 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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openSUSE Tumbleweed — libmodplug1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libmodplug1 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2011:0943-1 (see also SUSE bugzilla) Related CVEs: CVE-2011-1761 CVE-2013-4233 CVE-2013-4234 Upstream summary: Multiple stack-based buffer overflows in the (1) abc_new_macro and (2) abc_new_umacro functions in src/load_abc.cpp in libmodplug before 0.8.8.3 allow remote […]

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How to Set Up Varnish Cache on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up Varnish Cache on SLES 12

Introduction This tutorial covers How to Set Up Varnish Cache 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 […]

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Common Problems 114392

DNF Metadata Download Fails on RHEL 9 (ON-RHEL-9)

🟡 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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FreeBSD 12 — ruby+pthreads+oniguruma — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ruby+pthreads+oniguruma — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ruby — UTF-7 encoding XSS vulnerability in WEBrick Related CVEs: CVE-2006-5467 CVE-2006-6303 CVE-2008-1447 CVE-2008-2726 CVE-2008-3655 CVE-2008-3656 CVE-2008-3905 CVE-2009-1904  +1 more Upstream summary: The official ruby site reports: WEBrick have had […]

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How to Set Up PostgreSQL via AIX Toolbox on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up PostgreSQL via AIX Toolbox on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up postgresql via aix toolbox on ibm aix […]

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FreeBSD 12 — postfix-policyd-weight — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postfix-policyd-weight — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: postfix-policyd-weight — working directory symlink vulnerability Upstream summary: postfix-policyd-weight does not check for symlink for its working directory. If the working directory is not already setup by the super root, […]

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How to Configure a Forest Trust in Active Directory on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure a Forest Trust in Active Directory on Windows Server 2012 R2

How to Configure a Forest Trust in Active Directory on Windows Server 2012 R2 A forest trust is a transitive trust between two Active Directory forests that enables seamless authentication and resource access across forest boundaries. Unlike external trusts (which connect individual domains), a forest trust extends to all domains in both forests, allowing any […]

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How to Set Up SLES 15 in Oracle Cloud Infrastructure — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up SLES 15 in Oracle Cloud Infrastructure

Introduction This tutorial covers How to Set Up SLES 15 in Oracle Cloud Infrastructure 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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FreeBSD 12 — punbb — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — punbb — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: punbb — NULL byte injection vulnerability Related CVEs: CVE-2006-4759 Upstream summary: CVE Mitre reports: PunBB 1.2.12 does not properly handle an avatar directory pathname ending in %00, which allows remote […]

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