Linux

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

Oracle Linux 8 — cairo and pixman — security and stability fixes — required update (ELSA-2022-1961)

🟡 Medium   ⏱ 10–30 min  Last verified: 7 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1961 Related CVEs: CVE-2020-35492 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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Common Problems 121674

Debian 9 – Podman image pulls fail due to certificate trust issues

🟡 Medium   ⏱ 5–30 min  Last verified: 7 June 2021 Affected versions: Debian 9 📖 ~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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AlmaLinux 8 — inkscape — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — inkscape — 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-2022:1833 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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Gentoo Linux — mail-client/claws-mail — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — mail-client/claws-mail — 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-202007-56 Related CVEs: CVE-2020-15917 Upstream summary: It was discovered that Claws Mail was not properly handling state within the STARTTLS protocol handshake. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Ubuntu 18.04 — kmail — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — kmail — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7731-1 Related CVEs: CVE-2017-17689 CVE-2020-11880 Upstream summary: Damian Poddebniak, Christian Dresen, Jens Müller, Fabian Ising, Sebastian Schinzel, Simon Friedberger, Juraj Somorovsky, and Jörg Schwenk discovered that KMail could be made […]

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How to Configure restic Backup Solution on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure restic Backup Solution on Debian 9

Introduction How to Configure restic Backup Solution on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. […]

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

Ubuntu 20.04 — icu — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5156-1 Related CVEs: CVE-2021-30535 Upstream summary: It was discovered that ICU contains a double free issue. An attacker could use this issue to cause a denial of service or possibly […]

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Arch Linux — lz4 — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lz4 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202105-27 Related CVEs: CVE-2021-3520 Upstream summary: Type: denial of service. Status: Fixed. Affected: 1:1.9.3-1. Fixed in: 1:1.9.3-2. Group: AVG-1889. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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