Linux

Alpine Linux edge — openjdk11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — openjdk11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 11.0.9_p11-r0 📖 ~4 min read  •  Source: Alpine secdb entry — openjdk11 11.0.9_p11-r0 Related CVEs: CVE-2020-14779 CVE-2020-14781 CVE-2020-14782 CVE-2020-14792 CVE-2020-14796 CVE-2020-14797 CVE-2020-14798 CVE-2020-14803  +12 more Upstream summary: Alpine community repository for vedge ships openjdk11 11.0.9_p11-r0 which […]

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Debian 10 — firefox-esr — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — firefox-esr — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 October 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9811 CVE-2019-9812 CVE-2019-11757 CVE-2019-17005 CVE-2019-17026 CVE-2019-20503 CVE-2020-6831 CVE-2020-12399  +12 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Oracle Linux 8 — maven:3.6 security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — maven:3.6 security and — enhancement update — new behaviour and fixes (ELSA-2022-1860)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1860 Related CVEs: CVE-2020-13956 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 117411

Ubuntu 20.04 LTS apt Lock Contention During Auto Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2020 Affected versions: 20.04 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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How To Install the Send-Only Mail Server "Exim" on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How To Install the Send-Only Mail Server “Exim” on Ubuntu 12.04

Due to the popularity of Gmail, Google Apps, Outlook.com, Yahoo! Mail & a myriad of other providers, many cloud-server users mistakenly fail to install a mail server, initially. However, humans are not the only ones that send electronic mail. If fact, many Linux server applications also need to send email. This tutorial will review how to install a send-only mail server on Ubuntu 12.04.

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