Linux

Oracle Linux 9 — .NET 9.0 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 9.0 — vulnerability — patch and remediation guide (ELSA-2024-9543)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-9543 Related CVEs: CVE-2024-43498 CVE-2024-43499 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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Debian 11 — poppler — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — poppler — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-2097 CVE-2005-3191 CVE-2005-3192 CVE-2005-3193 CVE-2005-3624 CVE-2005-3625 CVE-2005-3626 CVE-2005-3627  +12 more Upstream summary: xpdf and kpdf do not properly validate the "loca" table in PDF files, which allows local […]

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Common Problems 116107

Ubuntu 26.04 LTS – NFS mount fails at boot with network-online timeout – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 26.04 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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Common Problems 117601

Ubuntu 20.04 LTS – Nginx fails to start due to configuration syntax errors – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 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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Common Problems 118602

Ubuntu 16.04 LTS – MySQL service fails to start due to InnoDB corruption – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 20 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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Common Problems 115598

RHEL 7 Yum Update Fails Because /boot Is Full

🟡 Medium   ⏱ 5–30 min  Last verified: 20 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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SLES 12 — libX11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libX11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:2092-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-3138 CVE-2020-14363 CVE-2021-31535 CVE-2018-14600 CVE-2025-26597 CVE-2023-43785 CVE-2023-43786 CVE-2023-43787  +12 more Upstream summary: A vulnerability was found in libX11. The security flaw occurs because the functions […]

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SLES 16 — freeradius-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — freeradius-server — multiple vulnerabilities (20 CVEs) — 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-2019:1039-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-11235 CVE-2019-17185 CVE-2022-41860 CVE-2022-41861 CVE-2008-4474 CVE-2012-3547 CVE-2014-2015 CVE-2015-4680  +12 more Upstream summary: FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is […]

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CentOS Stream 10 — crun — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — crun — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:6622 Related CVEs: CVE-2026-30892 Upstream summary: crun is a OCI runtime Security Fix(es): * crun: crun: Privilege escalation due to incorrect parsing of the `–user` option (CVE-2026-30892) For more details about […]

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Oracle Linux 9 — .NET 9.0 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 9.0 — vulnerability — patch and remediation guide (ELSA-2025-7600)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7600 Related CVEs: CVE-2025-26646 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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