Linux

Oracle Linux 9 — ruby security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — ruby security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-6585)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 October 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6585 Related CVEs: CVE-2022-28739 CVE-2022-28738 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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AlmaLinux 9 — zlib — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — zlib — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:7314 Related CVEs: CVE-2022-37434 Upstream summary: The zlib packages provide a general-purpose lossless data compression library that is used by many different programs. Security Fix(es): * zlib: a heap-based buffer over-read or […]

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Common Problems 120165

Debian 12 TLS Handshake Failures to Repository or API Endpoints

🟠 High   ⏱ 5–30 min  Last verified: 4 October 2023 Affected versions: Debian 12 📖 ~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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How to Configure LVM on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure LVM on CentOS Stream 9

Introduction How to Configure LVM on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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Common Problems 114423

RHEL 9 SELinux denies web application file access

🟡 Medium   ⏱ 5–30 min  Last verified: 4 October 2023 📖 ~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 117118

Ubuntu 22.04 LTS – python3 venv creation fails due to missing ensurepip – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 October 2023 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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Debian 12 — sox — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — sox — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0557 CVE-2014-8145 CVE-2017-11332 CVE-2017-11358 CVE-2017-11359 CVE-2017-15370 CVE-2017-15371 CVE-2017-15372  +12 more Upstream summary: Multiple buffer overflows in the st_wavstartread function in wav.c for Sound eXchange (SoX) 12.17.2 through 12.17.4 […]

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Debian 12 — gopher — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — gopher — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0805 CVE-2004-0560 CVE-2004-0561 CVE-2005-1853 CVE-2005-2772 Upstream summary: Multiple buffer overflows in UMN gopher daemon (gopherd) 2.x and 3.x before 3.0.6 allows attackers to execute arbitrary code via (1) […]

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

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

🟢 Low   ⏱ 5–15 min  Last verified: 4 October 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-2386 CVE-2004-2387 Upstream summary: Format string vulnerability in the LogMsg function in sercd before 2.3.1 and sredird 2.2.1 and earlier allows remote attackers to execute arbitrary code via […]

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Ubuntu 22.04 — python-future — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — python-future — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 October 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5833-1 Related CVEs: CVE-2022-40899 Upstream summary: Sebastian Chnelik discovered that python-future incorrectly handled certain HTTP header field. An attacker could possibly use this issue to cause a denial of service. […]

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