Linux

Oracle Linux 8 — virt:kvm_utils — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:kvm_utils — vulnerability — patch and remediation guide (ELSA-2022-10093)

🟠 High   ⏱ 15–60 min  Last verified: 20 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-10093 Related CVEs: CVE-2021-3631 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Oracle Linux 8 — virt:ol and virt-devel:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol and virt-devel:ol — vulnerability — patch and remediation guide (ELSA-2021-1064)

🟢 Low   ⏱ 5–15 min  Last verified: 20 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1064 Related CVEs: CVE-2021-20295 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Configure Database Connection Pooling with PgBouncer on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Database Connection Pooling with PgBouncer on RHEL 8

PgBouncer is a lightweight connection pooler for PostgreSQL that sits between your application and the database server, reusing a small pool of backend connections across many client requests. Without a connection pooler, PostgreSQL must fork a new backend process for every client connection, consuming memory and CPU as connection counts grow. On RHEL 8, PgBouncer […]

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Oracle Linux 8 — sysstat — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — sysstat — security and stability fixes — required update (ELSA-2023-7010)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 August 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7010 Related CVEs: CVE-2023-33204 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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AlmaLinux 8 — certmonger — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — certmonger — 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-2022:1789 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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AlmaLinux 8 — gssdp — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — gssdp — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:1789 Related CVEs: CVE-2020-12695 Upstream summary: GUPnP is an object-oriented open source framework for creating UPnP devices and control points, written in C using GObject and libsoup. The GUPnP API is intended […]

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Common Problems 117957

Ubuntu 18.04 SSH Login Fails with Public Key Authentication

🟡 Medium   ⏱ 5–30 min  Last verified: 19 August 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 — python-qt5 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — python-qt5 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4172 Related CVEs: CVE-2021-3481 CVE-2018-19869 CVE-2018-19871 CVE-2018-19872 Upstream summary: Qt is a software toolkit for developing applications. The following packages have been upgraded to a later upstream version: adwaita-qt (1.2.1), python-qt5 (5.15.0), […]

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