Linux

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

Oracle Linux 8 — evolution security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-1752)

🟢 Low   ⏱ 5–15 min  Last verified: 2 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1752 Related CVEs: CVE-2020-16117 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 118523

Ubuntu 16.04 LTS – repository signature or GPG key errors block updates – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 March 2021 Affected versions: Ubuntu 16.04 LTS 📖 ~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 — brotli — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — brotli — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.0.9-r0 📖 ~4 min read  •  Source: Alpine secdb entry — brotli 1.0.9-r0 Related CVEs: CVE-2020-8927 Upstream summary: Alpine main repository for vedge ships brotli 1.0.9-r0 which addresses CVE-2020-8927. Table of contents Symptom & Impact Environment […]

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Common Problems 115425

RHEL 7 firewalld Blocks Internal DNS Resolution

🟡 Medium   ⏱ 5–30 min  Last verified: 2 March 2021 Affected versions: RHEL 7 📖 ~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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Oracle Linux 8 — libreoffice — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libreoffice — vulnerability — patch and remediation guide (ELSA-2022-7461)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7461 Related CVEs: CVE-2021-25636 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 Set Up an NFS Mount on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up an NFS Mount on Ubuntu 18.04

NFS, or Network File System, is a distributed file system protocol that allows you to mount remote directories on your server. This tutorial goes over how to install all the components needed to run NFS and also walks readers through two distinct use cases for the protocol.

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Gentoo Linux — media-sound/fluidsynth — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-sound/fluidsynth — 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-202107-34 Related CVEs: CVE-2021-28421 Upstream summary: FluidSynth contains a use-after-free in sfloader/fluid_sffile.c which occurs when parsing Soundfile 2 files. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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Oracle Linux 8 — glib2 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — glib2 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2019-3530)

🟡 Medium   ⏱ 10–30 min  Last verified: 1 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3530 Related CVEs: CVE-2019-12450 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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