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How to Set Up Varnish Cache on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Varnish Cache on CentOS Stream 9

Introduction Setting up set up varnish cache on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Varnish Cache on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to […]

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Alpine Linux edge — libcue — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libcue — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.2.1-r2 đź“– ~4 min read  â€˘  Source: Alpine secdb entry — libcue 2.2.1-r2 Related CVEs: CVE-2023-43641 Upstream summary: Alpine community repository for vedge ships libcue 2.2.1-r2 which addresses CVE-2023-43641. Table of contents Symptom & Impact Environment […]

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Common Problems 117001

Ubuntu 22.04 LTS – /boot full prevents kernel updates – Fix & Prevention

đźź  High   ⏱ 5–30 min  Last verified: 13 November 2023 Affected versions: Ubuntu 22.04 LTS đź“– ~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 9.4 — php-contao45 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — php-contao45 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 đź“– ~4 min read  â€˘  Source: pkgsrc audit-packages entry Related CVEs: CVE-2018-10125 Upstream summary: pkgsrc audit-packages flagged php{71,72}-contao45<4.5.8 for vulnerability class 'cross-site-scripting'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10125 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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Common Problems 114396

DNF Metadata Download Timeout on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 13 November 2023 đź“– ~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 References & Further […]

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Common Problems 115075

RHEL 8 Multipath Device Flapping in SAN Environment

🟡 Medium   ⏱ 5–30 min  Last verified: 13 November 2023 đź“– ~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 References & Further […]

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Debian 12 — arb — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — arb — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 November 2023 Affected versions: Debian 12 (bookworm) đź“– ~4 min read  â€˘  Source: Debian Security Tracker Related CVEs: CVE-2008-4941 CVE-2008-5378 Upstream summary: arb-common 0.0.20071207.1 allows local users to overwrite arbitrary files via a symlink attack on (a) /tmp/arb_fdnaml_*, (b) /tmp/arb_pids_*, (c) /tmp/arbdsmz.html, and (d) /tmp/arbdsmz.htm temporary […]

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Windows Server 2022 — KB5032875 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5032875 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

đź”´ Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 đź“– ~4 min read  â€˘  Source: Microsoft KB5032875 • MSRC update-guide entry Related CVEs: CVE-2023-36796 CVE-2023-36793 CVE-2023-36792 CVE-2023-38171 CVE-2023-36435 CVE-2023-44487 CVE-2023-36794 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) Microsoft .NET Framework […]

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How to Configure a Python uWSGI Application Server on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure a Python uWSGI Application Server on Debian 12

Introduction This guide explains how to Configure a Python uWSGI Application Server on Debian 12 on Debian 12 Bookworm. Debian Bookworm 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 12 install […]

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NetBSD 9.4 — libreoffice4 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — libreoffice4 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 đź“– ~4 min read  â€˘  Source: pkgsrc audit-packages entry Related CVEs: CVE-2014-0247 CVE-2016-0794 CVE-2016-0795 CVE-2014-9093 Upstream summary: pkgsrc audit-packages flagged libreoffice4>=4.1.4<4.2.5 for vulnerability class 'security-bypass'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0247 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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