Common Problems

Ubuntu 20.04 — lynx — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — lynx — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4800-1 Related CVEs: CVE-2016-9179 CVE-2017-1000211 CVE-2021-38165 Upstream summary: It was discovered that Lynx incorrectly handled certain URLs. A remote attacker could possibly use this issue to obtain sensitive information or […]

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Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide (ELSA-2020-2972)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2972 Related CVEs: CVE-2020-14578 CVE-2020-14579 CVE-2020-14583 CVE-2020-14556 CVE-2020-14577 CVE-2020-14593 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Gentoo Linux — app-arch/rpm — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-arch/rpm — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202210-22 Related CVEs: CVE-2021-3521 CVE-2021-35937 CVE-2021-35938 CVE-2021-35939 CVE-2021-20266 CVE-2021-20271 CVE-2021-3421 Upstream summary: Multiple vulnerabilities have been discovered in RPM. Please review the CVE identifiers referenced below for details. Table of contents Symptom […]

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Oracle Linux 8 — glibc security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — glibc security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-4358)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 May 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4358 Related CVEs: CVE-2021-35942 CVE-2021-27645 CVE-2021-33574 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Common Problems 118527

Ubuntu 16.04 LTS PHP 7.0-FPM not running

🟡 Medium   ⏱ 5–30 min  Last verified: 24 May 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 — spacewalk-client-cert — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — spacewalk-client-cert — 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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FreeBSD 12 — rubygem-kramdown — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-kramdown — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 May 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: kramdown — template option vulnerability Related CVEs: CVE-2020-14001 Upstream summary: kramdown news: CVE-2020-14001 is addressed to avoid problems when using the {::options /} extension together with the 'template' option. Table […]

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FreeBSD 13 — py37-pysaml — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py37-pysaml — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 May 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pysaml2 — multiple vulnerabilities Related CVEs: CVE-2021-21238 CVE-2021-21239 Upstream summary: pysaml2 Releases: Fix processing of invalid SAML XML documents – CVE-2021-21238 Fix unspecified xmlsec1 key-type preference – CVE-2021-21239 Table of […]

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Common Problems 112610

Windows Server 2019 PerfMon Shows High Split IO per Sec on Misaligned Virtual Disks – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 May 2021 Affected versions: Windows Server 2019 📖 ~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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