Linux

Common Problems 119004

Ubuntu 14.04 LTS MySQL Service Crash Loop on Startup

🟡 Medium   ⏱ 5–30 min  Last verified: 18 November 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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AlmaLinux 8 — rhncfg — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — rhncfg — 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-2019:3355 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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Debian 11 — python-markdown2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-markdown2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-11888 CVE-2021-26813 Upstream summary: python-markdown2 through 2.3.8 allows XSS because element names are mishandled unless a \w+ match succeeds. For example, an attack might use elementname@ or elementname- […]

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How to Set Up iSCSI Storage on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up iSCSI Storage on RHEL 8

iSCSI (Internet Small Computer Systems Interface) allows you to share block storage devices over a standard TCP/IP network, making it a cost-effective alternative to dedicated Fibre Channel SANs. On RHEL 8, the targetcli package provides a powerful interactive shell for configuring iSCSI targets, while iscsi-initiator-utils handles the client side. This tutorial walks through setting up […]

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AlmaLinux 8 — hyperv-daemons — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — hyperv-daemons — 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-2022:1863 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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Debian 11 — eyed3 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — eyed3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-1934 Upstream summary: tag.py in eyeD3 (aka python-eyed3) 7.0.3, 0.6.18, and earlier for Python allows local users to modify arbitrary files via a symlink attack on a temporary […]

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Debian 11 — qtbase-opensource-src — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — qtbase-opensource-src — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 November 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-4549 CVE-2015-0295 CVE-2015-1858 CVE-2015-1859 CVE-2015-1860 CVE-2015-9541 CVE-2016-10040 CVE-2018-15518  +12 more Upstream summary: QXmlSimpleReader in Qt before 5.2 allows context-dependent attackers to cause a denial of service (memory consumption) […]

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