Logging Monitoring

Oracle Linux 9 — galera and mariadb — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — galera and mariadb — vulnerability — patch and remediation guide (ELSA-2025-19584)

🟡 Medium   ⏱ 10–30 min  Last verified: 30 October 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-19584 Related CVEs: CVE-2023-52969 CVE-2025-30693 CVE-2025-21490 CVE-2025-30722 CVE-2023-52970 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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Alpine Linux 3.19 — apache2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — apache2 — 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 2.4.65-r0 📖 ~4 min read  •  Source: Alpine secdb entry — apache2 2.4.65-r0 Related CVEs: CVE-2025-54090 CVE-2025-53020 CVE-2025-49812 CVE-2025-49630 CVE-2025-23048 CVE-2024-47252 CVE-2024-43394 CVE-2024-43204  +12 more Upstream summary: Alpine main repository for vv3.19 ships apache2 2.4.65-r0 which […]

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CentOS Stream 9 — jackson-jaxrs-providers — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — jackson-jaxrs-providers — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 October 2025 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:12280 Related CVEs: CVE-2025-52999 Upstream summary: Core part of Jackson that defines Streaming API as well as basic shared abstractions. Security Fix(es): * com.fasterxml.jackson.core/jackson-core: jackson-core Potential StackoverflowError (CVE-2025-52999) For more details […]

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How to Limit Container Resources with cgroups on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Limit Container Resources with cgroups on Debian 13

Introduction How to Limit Container Resources with cgroups on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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NetBSD 10.0 — cJSON — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — cJSON — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2023-53154 CVE-2025-57052 CVE-2023-26819 CVE-2023-50471 CVE-2023-50472 CVE-2024-31755 Upstream summary: pkgsrc audit-packages flagged cJSON<1.7.18 for vulnerability class 'heap-buffer-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2023-53154 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 127211

CentOS Stream 10 – Common Problem 225 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 29 October 2025 Affected versions: CentOS Stream 10 📖 ~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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How to Set Up GitLab Runner on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Set Up GitLab Runner on Oracle Linux 10

Introduction How to Set Up GitLab Runner on Oracle Linux 10 on Oracle Linux 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

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Common Problems 124036

Oracle Linux 10 – nftables backend conflicts with legacy iptables tooling – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 29 October 2025 Affected versions: Oracle Linux 10 📖 ~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 124014

Oracle Linux 10 – dnf cannot download metadata due to mirror TLS validation errors – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 October 2025 Affected versions: Oracle Linux 10 📖 ~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 9 — varnish — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — varnish — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:8337 Related CVEs: CVE-2025-47905 CVE-2024-30156 CVE-2023-44487 CVE-2022-45060 Upstream summary: Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web […]

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