Troubleshooting

SLES 12 — ruby2.1-rubygem-rake — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — ruby2.1-rubygem-rake — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 February 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-IU-2021:605-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-8130 Upstream summary: There is an OS command injection vulnerability in Ruby Rake < 12.3.3 in Rake::FileList when supplying a filename that begins with the […]

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Gentoo Linux — sys-fs/squashfs-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-fs/squashfs-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202305-29 Related CVEs: CVE-2021-40153 CVE-2021-41072 Upstream summary: Multiple vulnerabilities have been discovered in squashfs-tools. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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SLES 12 — spamassassin — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — spamassassin — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 9 February 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:0810-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-11805 CVE-2019-12420 CVE-2020-1930 CVE-2020-1931 CVE-2020-1946 CVE-2017-15705 CVE-2018-11780 CVE-2018-11781 Upstream summary: In Apache SpamAssassin before 3.4.3, nefarious CF files can be configured to run system commands […]

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SLES 15 — libblas3 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libblas3 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 February 2021 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:0913-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-4048 Upstream summary: An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack through version 3.10.0, as also used […]

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Oracle Linux 8 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — firefox — vulnerability — patch and remediation guide (ELSA-2020-2828)

🟠 High   ⏱ 15–60 min  Last verified: 9 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2828 Related CVEs: CVE-2020-12419 CVE-2020-12421 CVE-2020-12420 CVE-2020-12417 CVE-2020-12418 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Common Problems 124983

Oracle Linux 8 – Common Problem 002 – Diagnosis and Fix

🔴 Critical   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: Oracle Linux 8 📖 ~3 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 118506

Ubuntu 16.04 LTS – ext4 remounts filesystem read-only

🔴 Critical   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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Common Problems 117421

Ubuntu 20.04 LTS High CPU From journald Log Storm

🟡 Medium   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: 20.04 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 113636

Windows Server 2012 R2 — Patch Compliance Drift Caused by Disabled UsoSvc and WaaSMedic — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 February 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Gentoo Linux — kde-misc/kdeconnect — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — kde-misc/kdeconnect — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202101-16 Related CVEs: CVE-2020-26164 Upstream summary: Multiple issues causing excessive resource consumption were found in KDE Connect. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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