Logging Monitoring

How to Set Resource Limits with limits.conf on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Set Resource Limits with limits.conf on Debian 13

Introduction This guide explains how to Set Resource Limits with limits.conf on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with […]

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Common Problems 126991

CentOS Stream 10 – Common Problem 203 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 11 November 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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NetBSD 10.0 — polkit — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — polkit — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2013-4288 CVE-2021-4034 CVE-2021-3560 CVE-2018-19788 CVE-2019-6133 CVE-2025-7519 CVE-2018-1116 CVE-2021-4115 Upstream summary: pkgsrc audit-packages flagged polkit<0.112 for vulnerability class 'privilege-escalation'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4288 Table of contents Symptom & Impact Environment & Reproduction […]

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Common Problems 124092

Fail2ban Does Not Ban Hosts Due to Journal Backend Misconfig

🟡 Medium   ⏱ 5–30 min  Last verified: 11 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 […]

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Debian 13 — ikiwiki — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ikiwiki — multiple vulnerabilities (18 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 11 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-0165 CVE-2008-0169 CVE-2008-0808 CVE-2008-0809 CVE-2009-2944 CVE-2010-1195 CVE-2010-1673 CVE-2011-0428  +10 more Upstream summary: Cross-site request forgery (CSRF) vulnerability in Ikiwiki before 2.42 allows remote attackers to modify user preferences, […]

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Windows Server 2022 — KB5049614 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5049614 — security update — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5049614 • MSRC update-guide entry Related CVEs: CVE-2025-21176 Affected components: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) Table of contents Symptom & Impact Environment […]

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Common Problems 124003

Oracle Linux 10 – systemd service fails to start with Exec format error – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 11 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 […]

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Debian 13 — pinball — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — pinball — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2196 CVE-2009-3736 Upstream summary: Unspecified vulnerability in pinball 0.3.1 allows local users to gain privileges via unknown attack vectors that cause pinball to load plugins from an attacker-controlled […]

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Debian 13 — fish — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — fish — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-2905 CVE-2014-2906 CVE-2014-2914 CVE-2014-3219 CVE-2014-3856 CVE-2022-20001 CVE-2023-49284 Upstream summary: fish (aka fish-shell) 1.16.0 before 2.1.1 does not properly check the credentials, which allows local users to gain privileges […]

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Debian 13 — python-websockets — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — python-websockets — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-33880 Upstream summary: The aaugustin websockets library before 9.1 for Python has an Observable Timing Discrepancy on servers when HTTP Basic Authentication is enabled with basic_auth_protocol_factory(credentials=…). An attacker may […]

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