Security Hardening

Common Problems 113915

RHEL 10 – firewalld rich rule blocks internal API traffic unexpectedly

🟡 Medium   ⏱ 5–30 min  Last verified: 2 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 & […]

Read more
Common Problems 116953

Ubuntu 22.04 LTS – black screen after NVIDIA driver update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 August 2025 Affected versions: Ubuntu 22.04 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 […]

Read more
NetBSD 10.0 — jansson — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — jansson — multiple vulnerabilities (2 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-2016-4425 CVE-2013-6401 Upstream summary: pkgsrc audit-packages flagged jansson<2.8 for vulnerability class 'stack-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2016-4425 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

Read more
Common Problems 124182

Sudo Access Fails Due to Incorrect /etc/sudoers.d File Mode

🔴 Critical   ⏱ 5–30 min  Last verified: 2 August 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 […]

Read more
Common Problems 116615

Ubuntu 24.04 LTS – cron jobs not running at scheduled times – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 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 […]

Read more
NetBSD 10.0 — comix — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — comix — vulnerability — 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-2008-1568 Upstream summary: pkgsrc audit-packages flagged comix<3.6.4nb2 for vulnerability class 'arbitrary-command-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1568 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

Read more
How to Set Up Drone CI on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Set Up Drone CI on Oracle Linux 10 (ORACLE-LINUX-10)

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying set up drone ci on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Drone CI on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

Read more
Common Problems 116481

No Sound After Kernel Update on Ubuntu 24.04 LTS

🟠 High   ⏱ 5–30 min  Last verified: 2 August 2025 Affected versions: 24.04 📖 ~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 […]

Read more
Amazon Linux 2023 — nsight-systems-2025.5.2 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — nsight-systems-2025.5.2 — vulnerability — 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 ALAS2023NVIDIA-2026-256 Related CVEs: CVE-2025-33228 Upstream summary: NVIDIA Nsight Systems contains a vulnerability in the gfx_hotspot recipe, where an attacker could cause an OS command injection by supplying a malicious string […]

Read more
Common Problems 116393

Ubuntu 24.04 LTS – apt update fails with NO_PUBKEY for third-party repository – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 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 […]

Read more
CHAT