Common Problems

Common Problems 115106

RHEL 8 GRUB Rescue Prompt Appears After Disk UUID Change

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 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 112987

Windows Server 2016 — MSIX package install blocked by AppLocker or GPO publisher policy — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 2020 Affected versions: Windows Server 2016 📖 ~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 121090

Debian 10 – mdadm RAID Degraded and Rebuild Stalled – Safe Recovery

🟠 High   ⏱ 5–30 min  Last verified: 28 July 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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Common Problems 115488

RHEL 7 Yum GPG Key Verification Fails on Internal Mirror

🟡 Medium   ⏱ 5–30 min  Last verified: 28 July 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 115398

RHEL 7 systemctl Shows Unit Failed After Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 28 July 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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Alpine Linux edge — opendkim — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — opendkim — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0 📖 ~4 min read  •  Source: Alpine secdb entry — opendkim 0 Related CVEs: CVE-2020-35766 Upstream summary: Alpine community repository for vedge ships opendkim 0 which addresses CVE-2020-35766. Table of contents Symptom & Impact Environment […]

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Common Problems 112537

Windows Server 2019 – Storport queue depth saturation causes application timeouts – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 July 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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Ubuntu 18.04 — nvidia-graphics-drivers-440 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — nvidia-graphics-drivers-440 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 July 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4404-1 Related CVEs: CVE-2020-5963 CVE-2020-5967 CVE-2020-5973 Upstream summary: Thomas E. Carroll discovered that the NVIDIA Cuda grpahics driver did not properly perform access control when performing IPC. An attacker could […]

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Ubuntu 16.04 — ant — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — ant — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4874-1 Related CVEs: CVE-2020-1945 Upstream summary: It was discovered that Apache Ant created temporary files with insecure permissions. An attacker could use this vulnerability to read sensitive information leaked into […]

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

openSUSE Tumbleweed — sphinx — vulnerability — 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-2022:0046-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-29050 Upstream summary: SphinxSearch in Sphinx Technologies Sphinx through 3.1.1 allows directory traversal (in conjunction with CVE-2019-14511) because the mysql client can be used for […]

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