Linux

openSUSE Tumbleweed — mkvtoolnix — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — mkvtoolnix — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:3819-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-4022 Upstream summary: A use-after-free vulnerability exists in the way MKVToolNix MKVINFO v25.0.0 handles the MKV (matroska) file format. A specially crafted MKV file can […]

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Common Problems 121125

Debian 10 GRUB Update Fails After Package Changes

🟠 High   ⏱ 5–30 min  Last verified: 31 March 2020 Affected versions: Debian 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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Alpine Linux edge — tcpflow — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — tcpflow — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.5.0-r1 📖 ~4 min read  •  Source: Alpine secdb entry — tcpflow 1.5.0-r1 Related CVEs: CVE-2018-18409 CVE-2018-14938 Upstream summary: Alpine main repository for vedge ships tcpflow 1.5.0-r1 which addresses CVE-2018-18409. Table of contents Symptom & Impact […]

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Como instalar o WordPress com o LEMP no Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Como instalar o WordPress com o LEMP no Ubuntu 18.04

O WordPress é o CMS (sistema de gerenciamento de conteúdos) mais popular na Internet. Ele permite que você configure blogs e sites flexíveis com facilidade, além de um back-end em MySQL com processamento em PHP. A adoção do WordPress teve um crescimento incrível, sendo uma ótima…

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Gentoo Linux — media-libs/libmediainfo — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-libs/libmediainfo — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202405-09 Upstream summary: Multiple vulnerabilities have been discovered in MediaInfo and MediaInfoLib. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Oracle Linux 8 — libxml2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libxml2 — vulnerability — patch and remediation guide (ELSA-2020-4479)

🟡 Medium   ⏱ 10–30 min  Last verified: 31 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4479 Related CVEs: CVE-2020-7595 CVE-2019-20388 CVE-2019-19956 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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How to Install Jenkins on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Jenkins on Debian 10

Introduction How to Install Jenkins on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 10. This tutorial […]

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Oracle Linux 8 — libsndfile — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libsndfile — vulnerability — patch and remediation guide (ELSA-2020-1636)

🟡 Medium   ⏱ 10–30 min  Last verified: 31 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1636 Related CVEs: CVE-2018-13139 CVE-2018-19662 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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Arch Linux — gstreamer — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — gstreamer — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201702-7 Related CVEs: CVE-2017-5838 Upstream summary: Type: denial of service. Status: Fixed. Affected: 1.10.2-1. Fixed in: 1.10.3-1. Group: AVG-167. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 9 — libvirt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — libvirt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1000256 CVE-2018-1064 CVE-2019-10161 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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