Linux

Gentoo Linux — media-gfx/graphviz — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-gfx/graphviz — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202107-04 Related CVEs: CVE-2019-9904 CVE-2020-18032 Upstream summary: Multiple vulnerabilities have been discovered in Graphviz. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2020-3557)

🟠 High   ⏱ 15–60 min  Last verified: 15 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3557 Related CVEs: CVE-2020-15664 CVE-2020-12422 CVE-2020-15653 CVE-2020-15656 CVE-2020-15654 CVE-2020-12425 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Set Up a LAMP Stack on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a LAMP Stack on RHEL 8

A LAMP stack — Linux, Apache, MariaDB, and PHP — is one of the most widely deployed web server configurations in enterprise environments. RHEL 8 ships with the tools needed to install and configure each component using dnf and its module system. This tutorial walks you through installing and securing a fully functional LAMP stack […]

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

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2019-3237)

🟠 High   ⏱ 15–60 min  Last verified: 15 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3237 Related CVEs: CVE-2019-11758 CVE-2019-11757 CVE-2019-11759 CVE-2019-11761 CVE-2019-11762 CVE-2019-11763 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Gentoo Linux — sys-devel/gcc — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-devel/gcc — 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-202409-22 Related CVEs: CVE-2019-15847 Upstream summary: A vulnerability has been discovered in GCC. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Como instalar o Git no Debian 9 — step-by-step Linux tutorial on Progressive Robot

Como instalar o Git no Debian 9

Os sistemas de controle de versão de software permitem que você mantenha o controle do seu software no nível de código. Com ferramentas de versão, é possível rastrear as alterações, retornar para etapas anteriores e ramificar para criar versões alternativas de arquivos e…

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Common Problems 121033

Debian 10: chrony not syncing and system clock drift

🟡 Medium   ⏱ 5–30 min  Last verified: 14 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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openSUSE Tumbleweed — python36-marshmallow — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-marshmallow — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2018-17175 Upstream summary: In the marshmallow library before 2.15.1 and 3.x before 3.0.0b9 for Python, the schema "only" option treats an empty list as implying […]

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Common Problems 118579

Ubuntu 16.04 LTS Kernel Panic After Virtual Hardware Change

🟠 High   ⏱ 5–30 min  Last verified: 14 March 2020 Affected versions: 16.04 LTS 📖 ~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 Set Up a Private Docker Registry on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up a Private Docker Registry on Debian 9

Introduction This guide explains how to Set Up a Private Docker Registry on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install […]

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