Linux

How To Set Up WireGuard on Debian 11 — step-by-step Linux tutorial on Progressive Robot

How To Set Up WireGuard on Debian 11

In this tutorial, you will set up WireGuard on a Debian 11 server, and then configure another machine to connect to it as a peer using both IPv4 and IPv6 connections (commonly referred to as a _dual stack_ connection). You’ll also learn how to route the peer’s Internet traffic through the WireGuard server in a gateway configuration, in addition to using the VPN for an encrypted peer-to-peer tunnel.

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Oracle Linux 9 — postgresql — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — postgresql — vulnerability — patch and remediation guide (ELSA-2022-4771)

🟠 High   ⏱ 15–60 min  Last verified: 10 August 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-4771 Related CVEs: CVE-2022-1552 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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AlmaLinux 8 — libserf — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libserf — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:2234 Related CVEs: CVE-2022-24070 CVE-2020-17525 CVE-2019-0203 CVE-2018-11782 Upstream summary: Subversion (SVN) is a concurrent version control system which enables one or more users to collaborate in developing and maintaining a hierarchy of […]

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How to Create a CLI with Python Fire on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How to Create a CLI with Python Fire on Ubuntu 22.04

Python Fire is a Python library that lets you automatically CLIs (command line interfaces) from Python objects. CLIs are programs that take text input from the command line, and can be helpful to your workflow of developing and debugging. This can be useful for those more comfortable in Bash and a command line.

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How to Install Minio as S3-Compatible Storage on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Minio as S3-Compatible Storage on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up install minio as s3-compatible storage on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully […]

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Oracle Linux 8 — systemd security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — systemd security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-1611)

🟡 Medium   ⏱ 10–30 min  Last verified: 9 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1611 Related CVEs: CVE-2020-13776 CVE-2019-3842 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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Common Problems 117014

Ubuntu 22.04 LTS SSH Service Fails After Host Key Permission Change

🟡 Medium   ⏱ 5–30 min  Last verified: 9 August 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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AlmaLinux 8 — qt5-qtmultimedia — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — qt5-qtmultimedia — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4172 Related CVEs: CVE-2021-3481 Upstream summary: Qt is a software toolkit for developing applications. The following packages have been upgraded to a later upstream version: adwaita-qt (1.2.1), python-qt5 (5.15.0), qgnomeplatform (0.7.1), qt5 […]

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

Debian 11 — thin — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3287 Upstream summary: lib/thin/connection.rb in Thin web server before 1.2.4 relies on the X-Forwarded-For header to determine the IP address of the client, which allows remote attackers to […]

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Debian 11 — zoph — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — zoph — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-0402 CVE-2007-3905 CVE-2008-3258 CVE-2008-6837 CVE-2008-6838 CVE-2009-2343 CVE-2014-9235 CVE-2014-9236 Upstream summary: SQL injection vulnerability in Zoph before 0.5pre1 allows remote attackers to execute arbitrary SQL commands. Table of contents […]

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