Common Problems

Common Problems 116513

Ubuntu 24.04 LTS – No audio output with PipeWire active – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 24.04 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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Oracle Linux 9 — .NET 8.0 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 8.0 — vulnerability — patch and remediation guide (ELSA-2024-2842)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-2842 Related CVEs: CVE-2024-30046 CVE-2024-30045 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 117011

Ubuntu 22.04 LTS – GRUB update fails after disk UUID change – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 22.04 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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Oracle Linux 8 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-11747 Related CVEs: CVE-2025-8034 CVE-2025-8032 CVE-2025-8033 CVE-2025-8029 CVE-2025-8027 CVE-2025-8031 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 117511

Ubuntu 20.04 LTS – persistent high iowait caused by background apt jobs – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 20.04 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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SLES 16 — ignition — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — ignition — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:1194-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-33186 Upstream summary: gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of […]

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Common Problems 118016

Ubuntu 18.04 LTS – persistent high iowait caused by background apt jobs – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 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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SLES 15 — valkey — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — valkey — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:1949-1 (see also SUSE bugzilla) Related CVEs: CVE-2026-23631 CVE-2026-25243 CVE-2026-23479 CVE-2025-67733 CVE-2026-21863 CVE-2025-49112 Upstream summary: Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated […]

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Common Problems 118511

Ubuntu 16.04 LTS – network settings reset leaves server without persistent DNS – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 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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SLES 12 — sssd — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — sssd — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory RHSA-2025:19610 (see also SUSE bugzilla) Related CVEs: CVE-2025-11561 CVE-2023-3758 CVE-2022-4254 CVE-2021-3621 CVE-2010-4341 CVE-2011-1758 CVE-2013-0219 CVE-2013-0220  +6 more Upstream summary: A flaw was found in the integration of Active Directory and the System […]

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