chris

Common Problems 119614

Debian 13 – LVM thin pool reaches 100% and blocks writes

🔴 Critical   ⏱ 5–30 min  Last verified: 29 October 2025 Affected versions: Debian 13 Debian 13 (Trixie) Debian 13.x 📖 ~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 […]

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FreeBSD 13 — py311-h — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py311-h — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 October 2025 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: h11 accepts some malformed Chunked-Encoding bodies Related CVEs: CVE-2025-43859 Upstream summary: h11 reports: h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of […]

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Debian 13 — gi-docgen — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — gi-docgen — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 October 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-11687 Upstream summary: A flaw was found in the gi-docgen. This vulnerability allows arbitrary JavaScript execution in the context of the page — enabling DOM access, session cookie theft […]

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Common Problems 119579

Debian 13 AppArmor Denies NGINX Access to Required Paths

🟡 Medium   ⏱ 5–30 min  Last verified: 29 October 2025 📖 ~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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Alpine Linux 3.20 — elfutils — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — elfutils — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 0.176-r0 📖 ~4 min read  •  Source: Alpine secdb entry — elfutils 0.176-r0 Related CVEs: CVE-2019-7146 CVE-2019-7148 CVE-2019-7149 CVE-2019-7150 CVE-2019-7664 CVE-2019-7665 CVE-2019-18310 CVE-2019-18520  +6 more Upstream summary: Alpine main repository for vv3.20 ships elfutils 0.176-r0 which […]

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How to Configure OpenDKIM with Postfix on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 13

Introduction How to Configure OpenDKIM with Postfix on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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Common Problems 124002

Systemd Service Fails to Start Due to Unit File Syntax

🟠 High   ⏱ 5–30 min  Last verified: 29 October 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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Red Hat Enterprise Linux 9 — jmc — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — jmc — 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-2026:1823 Related CVEs: CVE-2025-66566 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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Debian 13 — foo2zjs — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — foo2zjs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 October 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2684 Upstream summary: foo2zjs before 20110722dfsg-3ubuntu1 as packaged in Ubuntu, 20110722dfsg-1 as packaged in Debian unstable, and 20090908dfsg-5.1+squeeze0 as packaged in Debian squeeze create temporary files insecurely, which […]

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