Linux

Oracle Linux 8 — binutils — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — binutils — security and stability fixes — required update (ELSA-2020-1797)

🟢 Low   ⏱ 5–15 min  Last verified: 24 August 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1797 Related CVEs: CVE-2019-1010204 CVE-2019-17451 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 120692

Debian 11 – Certbot Renewal Fails in Automation – Reliable ACME Recovery

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2022 Affected versions: Debian 11 📖 ~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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Common Problems 118487

Ubuntu 16.04 LTS NetworkManager not managing interface

🟡 Medium   ⏱ 5–30 min  Last verified: 24 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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Common Problems 116899

Ubuntu 22.04 LTS – dist-upgrade aborts with held broken packages

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2022 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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

Debian 11 — jsonpickle — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-22083 Upstream summary: jsonpickle through 1.4.1 allows remote code execution during deserialization of a malicious payload through the decode() function. Note: It has been argued that this is […]

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How to Set Up Nginx with PHP-FPM Connection Pooling on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Nginx with PHP-FPM Connection Pooling on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up set up nginx with php-fpm connection pooling 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 […]

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

Debian 11 — yadifa — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-14339 Upstream summary: The DNS packet parser in YADIFA before 2.2.6 does not check for the presence of infinite pointer loops, and thus it is possible to force […]

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How To Use Celery with RabbitMQ to Queue Tasks on an Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How To Use Celery with RabbitMQ to Queue Tasks on an Ubuntu VPS

Celery is an asynchronous messaging system that can be used to execute tasks in the background. Written in Python, this flexible system can be used to make your applications more responsive by offloading long-running tasks to the background, while your main program continues to run normally. In this guide, we will cover how to install and use celery with RabbitMQ, a messaging system.

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AlmaLinux 8 — python-ethtool — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — python-ethtool — 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-2022:2095 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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Debian 11 — schism — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — schism — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 August 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-14465 CVE-2019-14523 CVE-2019-14524 CVE-2021-32419 Upstream summary: fmt_mtm_load_song in fmt/mtm.c in Schism Tracker 20190722 has a heap-based buffer overflow. Table of contents Symptom & Impact Environment & Reproduction Root […]

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