🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.5.4-r9 📖 ~4 min read • Source: Alpine secdb entry — mrxvt 0.5.4-r9 Related CVEs: CVE-2021-33477 Upstream summary: Alpine community repository for vedge ships mrxvt 0.5.4-r9 which addresses CVE-2021-33477. Table of contents Symptom & Impact Environment […]
🔴 Critical ⏱ 5–30 min Last verified: 23 March 2021 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]
Query cache is a prominent MySQL feature that speeds up data retrieval from a database. In this tutorial, you will first configure MySQL without query cache and run queries to see the duration results. Then you’ll set up query cache and test your MySQL server with it enabled to show the difference in performance.
Learn how to install Java (JRE & JDK) on Ubuntu using apt. Step-by-step guide to setting up Java, verifying installation, and managing multiple versions.
Jekyll is a static-site generator that provides some of the benefits of a Content Management System (CMS) while avoiding the performance and security issues introduced by such database-driven sites. In this tutorial, you’ll learn how to automate the deployment process for your Jekyll site using Git and Git hooks, as well as how to additionally secure your production environment by using the `git-shell`.
🟡 Medium ⏱ 10–30 min Last verified: 23 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-1830 Related CVEs: CVE-2021-23214 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2LIVEPATCH-2021-035 Related CVEs: CVE-2020-28374 Upstream summary: A flaw was found in the Linux kernel's implementation of the Linux SCSI target host, where an authenticated attacker could write to any block […]
How to Use Skaffold for Kubernetes Development on RHEL 7 One of the most tedious aspects of Kubernetes development is the inner loop: make a code change, build a container image, push it to a registry, update the Kubernetes manifest, apply it to the cluster, and wait for the rolling update — repeated dozens of […]
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2021-27851 Upstream summary: A security vulnerability that can lead to local privilege escalation has been found in 'guix-daemon'. It affects multi-user setups in which 'guix-daemon' […]
🟠 High ⏱ 5–30 min Last verified: 22 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: Oracle Bug OLRNT-ol8-issues-known 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 […]
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