April 2021 - Page 21 of 66

Oracle Linux 8 — .NET Core 3.1 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core 3.1 security and bugfix update

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2954 Related CVEs: CVE-2020-1147 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
AlmaLinux 8 — mingw-glib2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — mingw-glib2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4526 Related CVEs: CVE-2021-27218 CVE-2021-27219 Upstream summary: GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main […]

Read more
IBM AIX 7.1 — CVE-2021-29832 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2021-29832 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 25 May 2026 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2021-29832, IBM Support Bulletin CVE: CVE-2021-29832 NVD summary: IBM Jazz for Service Management 1.1.3.10 and IBM Tivoli Netcool/OMNIbus_GUI is vulnerable to stored cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript […]

Read more
Common Problems 118519

Ubuntu 16.04 LTS MySQL Refuses Connections After Crash Recovery

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: 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 & […]

Read more
How to Configure Oracle Linux 8 for Container Workloads — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Oracle Linux 8 for Container Workloads

Introduction This tutorial demonstrates how to Configure Oracle Linux 8 for Container Workloads on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default […]

Read more
FreeBSD 13 — rubygem-rexml — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — rubygem-rexml — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ruby — XML round-trip vulnerability in REXML Related CVEs: CVE-2021-28965 Upstream summary: Juho Nurminen reports: When parsing and serializing a crafted XML document, REXML gem (including the one bundled with […]

Read more
Common Problems 118065

Ubuntu 18.04 LTS – cron jobs do not run at scheduled times

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

Read more
FreeBSD 13 — tmux — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — tmux — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: tmux — stack overflow in CSI parsing Upstream summary: Nicholas Marriott reports: tmux has a stack overflow in CSI parsing. Table of contents Symptom & Impact Environment & Reproduction Root […]

Read more
Common Problems 117394

Ubuntu 20.04 LTS APT Lock Error Blocks Package Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 […]

Read more
FreeBSD 12 — isc-dhcp44-relay — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — isc-dhcp44-relay — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: isc-dhcp — remotely exploitable vulnerability Related CVEs: CVE-2021-25217 Upstream summary: Michael McNally reports: Program code used by the ISC DHCP package to read and parse stored leases has a defect […]

Read more
CHAT