chris

Common Problems 119492

Debian 13 – nftables Rules Lost After Reboot – Persistence and Policy Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 6 November 2025 Affected versions: Debian 13 (Trixie) 📖 ~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
Debian 13 — libeddsa-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libeddsa-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-36843 Upstream summary: The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message Attacks) […]

Read more
NetBSD 9.4 — podman — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — podman — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2022-1227 CVE-2023-0778 CVE-2025-6032 CVE-2025-9566 CVE-2025-4953 CVE-2022-2989 Upstream summary: pkgsrc audit-packages flagged podman<3.4.7 for vulnerability class 'code-execution'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-1227 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
How to Install HAProxy on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Install HAProxy on SLES 16

Introduction This tutorial covers How to Install HAProxy on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh && […]

Read more
How to Install Apache HTTP Server on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Apache HTTP Server on RHEL 9

Apache HTTP Server (httpd) is the most historically significant web server in the history of the internet, powering billions of websites since 1995. On RHEL 9, Apache is available as httpd from the AppStream repository and integrates with SELinux, firewalld, and systemd. Apache’s module architecture makes it highly extensible: mod_rewrite for URL manipulation, mod_ssl for […]

Read more
How to Tune System Performance with tuned on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Tune System Performance with tuned on SLES 16

Introduction This tutorial covers How to Tune System Performance with tuned on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: […]

Read more
SLES 16 — libgtk — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libgtk — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 6 November 2025 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory RHSA-2024:6963 (see also SUSE bugzilla) Related CVEs: CVE-2024-6655 Upstream summary: A flaw was found in the GTK library. Under certain conditions, it is possible for a library to be injected into a […]

Read more
Common Problems 123964

DNF Metadata Download Fails Behind Corporate Proxy

🟠 High   ⏱ 5–30 min  Last verified: 6 November 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
Oracle Linux 9 — transfig — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — transfig — vulnerability — patch and remediation guide (ELSA-2026-0700)

🟡 Medium   ⏱ 10–30 min  Last verified: 6 November 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0700 Related CVEs: CVE-2025-46397 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Common Problems 116546

Ubuntu 24.04 LTS – Wi-Fi adapter not detected after kernel update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 6 November 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