Linux

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

Red Hat Enterprise Linux 9 — butane — 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-2026:3053 Related CVEs: CVE-2025-61729 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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Common Problems 124127

Oracle Linux 10 – systemd Service Restart Loop Triggers Availability Drops – Root Cause Workflow

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 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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How to Install Nagios on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Install Nagios on CentOS Stream 10

Introduction Setting up install nagios on centos stream 10 on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install Nagios on CentOS Stream 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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Common Problems 124059

Oracle Linux 10 – LVM thin pool reaches 100 percent and writes fail – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 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 123973

Oracle Linux 10 – dnf fails with SSL certificate verification error against repo mirror – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 July 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 10 — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:23484 Related CVEs: CVE-2025-5987 CVE-2025-5318 Upstream summary: libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fix(es): * libssh: Invalid return […]

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Ubuntu 24.04 — opencc — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — opencc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7972-1 Related CVEs: CVE-2025-15536 Upstream summary: It was discovered that OpenCC incorrectly handled truncated UTF-8 input. An attacker could possibly use this issue to cause OpenCC to crash, resulting in […]

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How to Install Icinga 2 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Icinga 2 on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying install icinga 2 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Icinga 2 on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites You will need: […]

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Ubuntu 24.04 — node-katex — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — node-katex — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7572-1 Related CVEs: CVE-2024-28246 CVE-2024-28245 CVE-2025-23207 CVE-2024-28243 Upstream summary: Juho Forsén discovered that KaTeX did not correctly handle certain inputs, which could lead to an infinite loop. If a user […]

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SLES 15 — libtpms0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libtpms0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 July 2025 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:1494-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-1017 CVE-2021-3746 CVE-2025-49133 CVE-2023-1018 CVE-2021-3623 CVE-2021-3446 CVE-2021-3505 Upstream summary: An out-of-bounds write vulnerability exists in TPM2.0's Module Library allowing writing of a 2-byte data past […]

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