Operations

SLES 12 — xerces-j2 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — xerces-j2 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 March 2023 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:712-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23437 Upstream summary: There's a vulnerability within the Apache Xerces Java (XercesJ) XML parser when handling specially crafted XML document payloads. This causes, the XercesJ […]

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openSUSE Tumbleweed — mruby — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — mruby — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2022-1212 CVE-2022-0080 CVE-2022-1276 CVE-2022-1427 CVE-2022-1286 CVE-2022-0481 CVE-2022-0623 CVE-2022-0717  +5 more Upstream summary: Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible […]

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Oracle Linux 9 — python-requests — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — python-requests — vulnerability — patch and remediation guide (ELSA-2023-4350)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4350 Related CVEs: CVE-2023-32681 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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Windows Server 2016 — KB5022842 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5022842 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5022842 • 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 2016 Table of contents Symptom & Impact Environment & Reproduction Root […]

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Oracle Linux 8 — istio — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — istio — vulnerability — patch and remediation guide (ELSA-2022-9771)

🟠 High   ⏱ 15–60 min  Last verified: 4 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9771 Related CVEs: CVE-2022-31045 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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Oracle Linux 8 — istio — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — istio — vulnerability — patch and remediation guide (ELSA-2023-12356)

🟠 High   ⏱ 15–60 min  Last verified: 4 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12356 Related CVEs: CVE-2023-27491 CVE-2023-27492 CVE-2023-27488 CVE-2023-27487 CVE-2023-27493 CVE-2023-27496 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2022-9480)

🟠 High   ⏱ 15–60 min  Last verified: 4 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9480 Related CVEs: CVE-2021-4197 CVE-2022-23041 CVE-2022-1353 CVE-2022-1048 CVE-2022-23040 CVE-2022-23042 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Windows Server 2016 — KB5022836 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5022836 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5022836 • 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 2016 Table of contents Symptom & Impact Environment & Reproduction Root […]

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Oracle Linux 9 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-4057)

🟠 High   ⏱ 15–60 min  Last verified: 3 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4057 Related CVEs: CVE-2023-33170 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 118983

Ubuntu 14.04 LTS LightDM login loop on desktop

🟡 Medium   ⏱ 5–30 min  Last verified: 3 March 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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CHAT