Linux

Ubuntu 20.04 — libinput — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libinput — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 April 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5382-1 Related CVEs: CVE-2022-1215 Upstream summary: Albin Eldstål-Ahrens and Lukas Lamster discovered libinput did not properly handle input devices with specially crafted names. A local attacker with physical access could […]

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AlmaLinux 8 — perl-Locale-Codes — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — perl-Locale-Codes — 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-2019:3337 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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Oracle Linux 8 — container-tools:1.0 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — container-tools:1.0 — security and stability fixes — required update (ELSA-2020-1926)

🟠 High   ⏱ 15–60 min  Last verified: 29 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1926 Related CVEs: CVE-2020-10696 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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How to Enable the EPEL Repository on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Enable the EPEL Repository on CentOS Stream 9

Introduction Setting up enable the epel repository 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 Enable the EPEL Repository on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to […]

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Common Problems 120569

Debian 11 Firewall Rules Lost After Reboot

🟠 High   ⏱ 5–30 min  Last verified: 29 April 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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Alpine Linux edge — py3-mistune — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — py3-mistune — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.0.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — py3-mistune 2.0.3-r0 Related CVEs: CVE-2022-34749 Upstream summary: Alpine community repository for vedge ships py3-mistune 2.0.3-r0 which addresses CVE-2022-34749. Table of contents Symptom & Impact Environment […]

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Common Problems 116957

Ubuntu 22.04 Severe Swap Thrashing Under Memory Pressure

🟡 Medium   ⏱ 5–30 min  Last verified: 29 April 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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Gentoo Linux — sys-apps/busybox — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-apps/busybox — multiple vulnerabilities (15 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-202407-17 Related CVEs: CVE-2021-42373 CVE-2021-42374 CVE-2021-42375 CVE-2021-42376 CVE-2021-42377 CVE-2021-42378 CVE-2021-42379 CVE-2021-42380  +7 more Upstream summary: Multiple vulnerabilities have been discovered in BusyBox. Please review the CVE identifiers referenced below for details. Table […]

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Debian 11 — sql-ledger — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — sql-ledger — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-4244 CVE-2006-4731 CVE-2006-4798 CVE-2006-5872 CVE-2007-0667 CVE-2007-1329 CVE-2007-1436 CVE-2007-1437  +12 more Upstream summary: SQL-Ledger 2.4.4 through 2.6.17 authenticates users by verifying that the value of the sql-ledger-[username] cookie matches […]

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How to Set Up SonarQube Code Analysis on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up SonarQube Code Analysis on Debian 11

Introduction How to Set Up SonarQube Code Analysis on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye 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 […]

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