Security Hardening

Oracle Linux 8 — squid:4 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 — security and stability fixes — required update (ELSA-2022-1939)

🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1939 Related CVEs: CVE-2021-28116 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 118405

E: Unable to Locate Package on Ubuntu 16.04

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 2021 📖 ~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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How to Install MongoDB on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install MongoDB on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install mongodb on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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

AlmaLinux 8 — dbus-python — 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-2019:3614 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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Common Problems 118099

Ubuntu 18.04 LTS Kernel Panic After Security Update

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2021 Affected versions: 18.04 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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Common Problems 118008

Ubuntu 18.04 LTS – ext4 filesystem remounts read-only after I/O errors – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2021 Affected versions: Ubuntu 18.04 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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FreeBSD 13 — php55-odbc — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — php55-odbc — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2015-8879 CVE-2016-5385 CVE-2016-5399 CVE-2016-6288 CVE-2016-6289 CVE-2016-6290 CVE-2016-6291 CVE-2016-6292  +4 more Upstream summary: PHP reports: Fixed bug #69975 (PHP segfaults when accessing nvarchar(max) defined columns) […]

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Common Problems 115019

RHEL 8 – DNF Module Stream Conflict Blocks App Installation

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 2021 📖 ~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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FreeBSD 13 — m6811-binutils — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — m6811-binutils — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: GNU binutils — multiple vulnerabilities Related CVEs: CVE-2014-8501 CVE-2014-8502 CVE-2014-8503 Upstream summary: US-CERT/NIST reports: The _bfd_XXi_swap_aouthdr_in function in bfd/peXXigen.c in GNU binutils 2.24 and earlier allows remote attackers to cause […]

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