Security Hardening

SLES 16 — squashfs — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — squashfs — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2012-4025 CVE-2015-4645 CVE-2015-4646 CVE-2021-40153 CVE-2021-41072 CVE-2012-4024 Upstream summary: Integer overflow in the queue_init function in unsquashfs.c in unsquashfs in Squashfs 4.2 and earlier allows remote […]

Read more
Oracle Linux 10 — libarchive — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — libarchive — vulnerability — patch and remediation guide (ELSA-2025-7510)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 May 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7510 Related CVEs: CVE-2024-57970 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Oracle Linux 9 — glibc — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — glibc — vulnerability — patch and remediation guide (ELSA-2025-12748)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-12748 Related CVEs: CVE-2025-8058 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Windows Server 2016 — KB5055557 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5055557 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5055557 • MSRC update-guide entry Related CVEs: CVE-2025-26663 CVE-2025-26686 CVE-2025-26670 CVE-2025-27480 CVE-2023-40547 CVE-2025-26664 CVE-2025-26665 CVE-2025-26669  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Microsoft summary: Use after […]

Read more
Oracle Linux 10 — libpng — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — libpng — vulnerability — patch and remediation guide (ELSA-2026-3551)

🟠 High   ⏱ 15–60 min  Last verified: 28 May 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-3551 Related CVEs: CVE-2026-22695 CVE-2026-22801 CVE-2026-25646 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

Read more
Common Problems 113946

RHEL 10 NetworkManager DNS Settings Not Applied

🟡 Medium   ⏱ 5–30 min  Last verified: 28 May 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

Read more
Red Hat Enterprise Linux 9 — firefox — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — firefox — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:19464 Related CVEs: CVE-2026-6746 CVE-2026-6747 CVE-2026-6748 CVE-2026-6749 CVE-2026-6750 CVE-2026-6751 CVE-2026-6752 CVE-2026-6753  +12 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

Read more
Common Problems 115985

Intermittent DNS Resolution with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 28 May 2026 📖 ~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 […]

Read more
How to Install and Secure phpMyAdmin on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install and Secure phpMyAdmin on FreeBSD 15

Introduction How to Install and Secure phpMyAdmin on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

Read more
Amazon Linux 2 — bind — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — bind — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2026-3226 Related CVEs: CVE-2026-1519 CVE-2025-8677 CVE-2024-11187 CVE-2024-12705 CVE-2023-4408 CVE-2024-1737 CVE-2024-1975 CVE-2023-50387  +12 more Upstream summary: If a BIND resolver is performing DNSSEC validation and encounters a maliciously crafted zone, the […]

Read more
CHAT