Common Problems

Common Problems 111850

Windows Server 2022 — DFS namespace referrals return stale targets to clients — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 August 2023 Affected versions: Windows Server 2022 📖 ~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 Leap 15.5 — jupyter-notebook — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — jupyter-notebook — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2024:0231-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-32798 CVE-2019-11358 Upstream summary: The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on […]

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Oracle Linux 9 — dnsmasq — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — dnsmasq — security and stability fixes — required update (ELSA-2023-6524)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6524 Related CVEs: CVE-2023-28450 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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Common Problems 120026

Debian 12 DNS Resolution Flaps with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 2023 Affected versions: Debian 12 📖 ~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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NetBSD 9.4 — p5-razor-agents — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — p5-razor-agents — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged p5-razor-agents<2.72 for vulnerability class 'denial-of-service'. Reference: http://secunia.com/advisories/15739/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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IBM AIX 7.2 — CVE-2023-24964 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2023-24964 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 8 August 2023 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2023-24964, IBM Support Bulletin CVE: CVE-2023-24964 NVD summary: IBM InfoSphere Information Server 11.7 could allow a local user to obtain sensitive information from a log files. IBM X-Force ID: 246463. References: exchange.xforce.ibmcloud.com/vulnerabilities/246 […]

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Windows Server 2022 — KB5022834 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5022834 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5022834 • MSRC update-guide entry Related CVEs: CVE-2023-21689 CVE-2023-21690 CVE-2023-21692 CVE-2023-21684 CVE-2023-21701 CVE-2023-21797 CVE-2023-21798 CVE-2023-21799  +12 more Affected components: Windows Server 2022 Windows Server 2022 (Server Core installation) Table of contents Symptom […]

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Common Problems 117605

Ubuntu 20.04 LTS Failed to Start OpenVPN Service

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 2023 📖 ~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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