RHEL 9

Common Problems 114420

Kernel Updated but Reboot Not Performed

🟡 Medium   ⏱ 5–30 min  Last verified: 24 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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Red Hat Enterprise Linux 9 — cri-o — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — cri-o — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:2082 Related CVEs: CVE-2025-58183 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Red Hat Enterprise Linux 9 — p11-kit — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — p11-kit — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:18599 Related CVEs: CVE-2026-2100 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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How to Install Ansible on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Ansible on RHEL 9

Ansible is an open-source IT automation tool developed by Red Hat that allows managing server configuration, application deployment, and task automation using human-readable YAML playbooks. Unlike Chef or Puppet (which require agents installed on managed nodes), Ansible is agentless — it connects to managed servers via SSH and executes tasks using Python, with no permanent […]

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Red Hat Enterprise Linux 9 — delve — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — delve — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:3842 Related CVEs: CVE-2025-68121 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Red Hat Enterprise Linux 9 — gvisor-tap-vsock — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — gvisor-tap-vsock — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:12033 Related CVEs: CVE-2025-61726 CVE-2025-61729 CVE-2025-68121 CVE-2026-25679 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix […]

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Red Hat Enterprise Linux 9 — nghttp2 — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — nghttp2 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:8548 Related CVEs: CVE-2026-27135 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Red Hat Enterprise Linux 9 — python-pyasn1 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — python-pyasn1 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:17446 Related CVEs: CVE-2025-58183 CVE-2025-61726 CVE-2025-61728 CVE-2025-61729 CVE-2025-68121 CVE-2026-23490 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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How to Set Up a Local Container Registry with Harbor on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up a Local Container Registry with Harbor on RHEL 9

Harbor is an enterprise-grade open-source container registry that extends the basic Docker Registry with role-based access control, vulnerability scanning, image signing, and replication across multiple registries. While Docker’s official registry:2 image is suitable for simple use cases, Harbor is purpose-built for teams that need audit logs, project-level isolation, and automated security scanning before images reach […]

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Red Hat Enterprise Linux 9 — edk2 — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — edk2 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:3164 Related CVEs: CVE-2025-9230 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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