Security Hardening

Red Hat Enterprise Linux 10 — capstone — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 10 — capstone — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 10 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:6817 Related CVEs: CVE-2025-67873 CVE-2025-68114 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 114623

DNS Resolution Fails Intermittently on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 11 June 2025 📖 ~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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Oracle Linux 9 — libvirt — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — libvirt — vulnerability — patch and remediation guide (ELSA-2024-12406)

🟡 Medium   ⏱ 10–30 min  Last verified: 11 June 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12406 Related CVEs: CVE-2024-1441 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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Alpine Linux 3.19 — clamav — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — clamav — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 1.2.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — clamav 1.2.2-r0 Related CVEs: CVE-2024-20290 CVE-2024-20328 CVE-2022-48579 CVE-2023-20197 CVE-2023-20032 CVE-2023-20052 CVE-2012-6706 CVE-2017-6419  +12 more Upstream summary: Alpine community repository for vv3.19 ships clamav 1.2.2-r0 which […]

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

Oracle Linux 8 — systemd — vulnerability — patch and remediation guide (ELSA-2025-20343)

🟠 High   ⏱ 15–60 min  Last verified: 11 June 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20343 Related CVEs: CVE-2025-4598 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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openSUSE Leap 15.6 — libevtlog — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — libevtlog — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2024-47619 Upstream summary: syslog-ng is an enhanced log daemo. Prior to version 4.8.2, `tls_wildcard_match()` matches on certificates such as `foo.*.bar` although that is not […]

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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-2025-18151)

🟠 High   ⏱ 15–60 min  Last verified: 11 June 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-18151 Related CVEs: CVE-2025-55247 CVE-2025-55248 CVE-2025-55315 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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Amazon Linux 2 — kernel-livepatch-4.14.355-277.647 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.355-277.647 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2025-253 Related CVEs: CVE-2022-49935 CVE-2023-53137 CVE-2025-21811 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: check if the new fence is really later (CVE-2022-49935) Table of […]

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How to Join Windows and Linux Machines to Active Directory Domain on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Join Windows and Linux Machines to Active Directory Domain on Windows Server 2025

How to Join Windows and Linux Machines to Active Directory Domain on Windows Server 2025 Active Directory (AD) is the identity backbone of most enterprise networks. Joining both Windows and Linux machines to the domain centralizes authentication, enforces Group Policy, enables single sign-on (SSO), and provides unified user and computer management through tools like Active […]

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