Linux

Debian 11 — python-os-vif — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-os-vif — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-15753 Upstream summary: In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of […]

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Debian 11 — ruby-haml — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ruby-haml — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1002201 Upstream summary: In haml versions prior to version 5.0.0.beta.2, when using user input to perform tasks on the server, characters like < > " ' must be […]

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Debian 11 — matplotlib — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — matplotlib — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1424 Upstream summary: Buffer overflow vulnerability in matplotlib.This issue affects matplotlib: before upstream commit ba4016014cb4fb4927e36ce8ea429fed47dcb787. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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Debian 11 — haskell-tls — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — haskell-tls — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-3389 CVE-2014-3566 Upstream summary: The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera, and other products, encrypts […]

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AlmaLinux 8 — lensfun — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — lensfun — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1971 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Como Instalar e Utilizar o PostgreSQL no Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Como Instalar e Utilizar o PostgreSQL no Ubuntu 20.04

Sistemas de gerenciamento de banco de dados relacionados são um componente fundamental de muitos sites e aplicativos. Eles fornecem uma maneira estruturada de armazenar, organizar e acessar informações. O PostgreSQL ou Postgres é um sistema de…

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Oracle Linux 8 — Package Conflict Between usbguard-1.0.0-2.el8.i686 And usbguard-1.0.0-8.el8.x86_64 on Oracle Linux 8 Upgrades — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Package Conflict Between usbguard-1.0.0-2.el8.i686 And usbguard-1.0.0-8.el8.x86_64 on Oracle Linux 8 Upgrades

🟠 High   ⏱ 5–30 min  Last verified: 3 January 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 34097708 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 […]

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Common Problems 117599

Ubuntu 20.04 suspend and resume not working properly

🟡 Medium   ⏱ 5–30 min  Last verified: 3 January 2022 📖 ~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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How to Set Up TimescaleDB on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up TimescaleDB on CentOS Stream 9

Introduction Setting up set up timescaledb 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 TimescaleDB on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Common Problems 114931

RHEL 8 NetworkManager DNS Resolution Intermittently Failing

🟡 Medium   ⏱ 5–30 min  Last verified: 3 January 2022 📖 ~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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