Linux

How to Enable and Configure SELinux Enforcing Mode on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Enable and Configure SELinux Enforcing Mode on RHEL 10

Introduction This tutorial demonstrates how to Enable and Configure SELinux Enforcing Mode on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default […]

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Common Problems 116568

Ubuntu 24.04 LTS Docker Daemon Fails with cgroup Driver Mismatch

🟠 High   ⏱ 5–30 min  Last verified: 11 August 2025 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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Amazon Linux 2023 — microcode_ctl — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — microcode_ctl — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1209 Related CVEs: CVE-2025-22839 CVE-2025-22840 CVE-2025-22889 CVE-2025-26403 CVE-2025-32086 CVE-2025-20053 CVE-2025-21090 CVE-2025-24305  +12 more Upstream summary: Insufficient granularity of access control in the OOB-MSM for some Intel(R) Xeon(R) 6 Scalable processors […]

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Common Problems 116477

Ubuntu 24.04 LTS – system boots to GRUB rescue after update – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 11 August 2025 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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AlmaLinux 8 — maven-resources-plugin — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — maven-resources-plugin — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:9318 Related CVEs: CVE-2019-10086 CVE-2025-48734 Upstream summary: The javapackages-tools packages provide macros and scripts to support Java packaging. Security Fix(es): * apache-commons-beanutils: does not suppresses the class property in PropertyUtilsBean by default […]

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Common Problems 116473

Ubuntu 24.04 LTS – cloud-init stalls while waiting for unavailable datasource

🟡 Medium   ⏱ 5–30 min  Last verified: 11 August 2025 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 […]

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AlmaLinux 8 — git — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — git — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:11534 Related CVEs: CVE-2024-50349 CVE-2024-52006 CVE-2025-27613 CVE-2025-27614 CVE-2025-46835 CVE-2025-48384 CVE-2025-48385 CVE-2024-32002  +12 more Upstream summary: Git is a distributed revision control system with a decentralized architecture. As opposed to centralized version control […]

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Common Problems 113925

RHEL 10 – SELinux AVC denials break NGINX reverse proxy after policy update

🟠 High   ⏱ 5–30 min  Last verified: 11 August 2025 Affected versions: RHEL 10 RHEL 10.0 RHEL 10.1 📖 ~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 & […]

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Alpine Linux 3.20 — stb — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — stb — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 0_git20231012-r0 📖 ~4 min read  •  Source: Alpine secdb entry — stb 0_git20231012-r0 Related CVEs: CVE-2023-43898 CVE-2023-45661 CVE-2023-45662 CVE-2023-45663 CVE-2023-45664 CVE-2023-45666 CVE-2023-45667 CVE-2023-45675 Upstream summary: Alpine community repository for vv3.20 ships stb 0_git20231012-r0 which addresses CVE-2023-43898. […]

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Debian 11 — pcsx2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pcsx2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 August 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-49589 CVE-2025-67749 Upstream summary: PCSX2 is a free and open-source PlayStation 2 (PS2) emulator. A stack-based buffer overflow exists in the Kprintf_HLE function of PCSX2 versions up to […]

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