Package Management

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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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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How to Configure ZFS on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure ZFS on Oracle Linux 8

Introduction This tutorial demonstrates how to Configure ZFS on Oracle Linux 8 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 AppStream […]

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

Oracle Linux 8 — fetchmail — vulnerability — patch and remediation guide (ELSA-2022-1964)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1964 Related CVEs: CVE-2021-36386 CVE-2021-39272 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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How to Use ibmservice to Register Support on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use ibmservice to Register Support on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use ibmservice to register support on ibm aix 7.2 […]

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openSUSE Tumbleweed — live555 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — live555 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0915-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-15232 CVE-2018-4013 CVE-2019-6256 CVE-2019-7314 CVE-2019-9215 CVE-2021-28899 CVE-2021-38380 CVE-2021-38381  +4 more Upstream summary: Live555 before 2019.08.16 has a Use-After-Free because GenericMediaServer::createNewClientSessionWithId can generate the same client […]

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How to Configure DKIM, SPF and DMARC on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure DKIM, SPF and DMARC on RHEL 7

How to Configure DKIM, SPF and DMARC on RHEL 7 Email authentication standards — SPF, DKIM, and DMARC — are essential for any mail server that sends outbound email. Without them, your messages are likely to be rejected or placed in spam folders by major providers such as Gmail, Microsoft 365, and Yahoo. SPF (Sender […]

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Debian 10 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 February 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9511 CVE-2020-11724 CVE-2021-23017 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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