Linux

CentOS Stream 9 — qt5 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — qt5 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 March 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2023:6369 Related CVEs: CVE-2023-32573 CVE-2023-33285 CVE-2023-34410 CVE-2023-37369 CVE-2023-38197 CVE-2022-25255 Upstream summary: Qt is a software toolkit for developing applications. Security Fix(es): * qt: buffer over-read via a crafted reply from a […]

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Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2022-8561)

🟠 High   ⏱ 15–60 min  Last verified: 2 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8561 Related CVEs: CVE-2022-45405 CVE-2022-45418 CVE-2022-45416 CVE-2022-45408 CVE-2022-45409 CVE-2022-45420 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Rocky Linux 8 — python-mako — vulnerability — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — python-mako — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2023:2893 Related CVEs: CVE-2022-40023 Upstream summary: Mako is a template library written in Python. It provides a familiar, non-XML syntax which compiles into Python modules for maximum performance. Security Fix(es): […]

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

Oracle Linux 8 — pcs — vulnerability — patch and remediation guide (ELSA-2023-12137)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12137 Related CVEs: CVE-2022-45442 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 9 — curl — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — curl — vulnerability — patch and remediation guide (ELSA-2023-1701)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-1701 Related CVEs: CVE-2023-23916 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 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2023-13005)

🟠 High   ⏱ 15–60 min  Last verified: 2 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-13005 Related CVEs: CVE-2023-1989 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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SLES 12 — libxerces-c — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libxerces-c — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 2 March 2023 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory RHSA-2024:8795 (see also SUSE bugzilla) Related CVEs: CVE-2023-37536 CVE-2017-12627 CVE-2018-1311 CVE-2009-1885 CVE-2015-0252 CVE-2016-0729 CVE-2016-2099 CVE-2016-4463 Upstream summary: An integer overflow in xerces-c++ 3.2.3 in BigFix Platform allows remote attackers to cause out-of-bound […]

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Oracle Linux 9 — ignition security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — ignition security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-8126)

🟡 Medium   ⏱ 10–30 min  Last verified: 1 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8126 Related CVEs: CVE-2022-1706 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 Build Docker Images with Multi-Stage Builds on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Build Docker Images with Multi-Stage Builds on RHEL 9

Multi-stage Docker builds solve one of the most common Docker image size problems: development tools, build compilers, test frameworks, and package managers being included in production images. Without multi-stage builds, a Node.js production image might include the full npm package tree, TypeScript compiler, and development dependencies — increasing image size from ~50 MB to 500+ […]

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