Common Problems

Common Problems 114955

NFS Mount Fails at Boot on RHEL 8

🟡 Medium   ⏱ 5–30 min  Last verified: 7 June 2020 📖 ~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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Common Problems 113483

Windows Server 2012 R2 — BitLocker recovery key prompt appears on every boot — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 7 June 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Common Problems 112422

Windows Server 2019 – NTLM fallback when Kerberos should be used – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 7 June 2020 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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FreeBSD 12 — ruby21-gems — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ruby21-gems — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rubygems — request hijacking vulnerability Related CVEs: CVE-2015-3900 Upstream summary: Jonathan Claudius reports: RubyGems provides the ability of a domain to direct clients to a separate host that is used […]

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Debian 9 — libxmlrpc3-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — libxmlrpc3-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17570 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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Gentoo Linux — x11-misc/sddm — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — x11-misc/sddm — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202402-02 Related CVEs: CVE-2020-28049 Upstream summary: A vulnerability has been discovered in SDDM. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 121643

Debian 9: NFS mounts hang during boot

🟠 High   ⏱ 5–30 min  Last verified: 6 June 2020 Affected versions: Debian 9 📖 ~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 121020

Debian 10 – resolv.conf Keeps Reverting and DNS Fails – Resolver Control

🟠 High   ⏱ 5–30 min  Last verified: 6 June 2020 Affected versions: Debian 10 📖 ~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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openSUSE Tumbleweed — tnftp — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — tnftp — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2014-8517 Upstream summary: The fetch_url function in usr.bin/ftp/fetch.c in tnftp, as used in NetBSD 5.1 through 5.1.4, 5.2 through 5.2.2, 6.0 through 6.0.6, and 6.1 […]

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Common Problems 117969

Ubuntu 18.04 LTS Swap Not Activating After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 6 June 2020 Affected versions: 18.04 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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