Security Hardening

Debian 13 — node-dompurify — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — node-dompurify — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • June 21, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-47875 CVE-2024-48910 CVE-2025-15599 CVE-2025-26791 CVE-2025-48050 CVE-2026-0540 CVE-2026-41238 CVE-2026-41239  +1 more Upstream summary: DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable […]

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Oracle Linux 10 — qt6-qtsvg — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — qt6-qtsvg — vulnerability — patch and remediation guide (ELSA-2025-19772)

  • June 21, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 June 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-19772 Related CVEs: CVE-2025-10729 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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Debian 13 — chocolate-doom — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — chocolate-doom — vulnerability — patch and remediation guide

  • June 21, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 21 June 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-14983 Upstream summary: The server in Chocolate Doom 3.0.0 and Crispy Doom 5.8.0 doesn't validate the user-controlled num_players value, leading to a buffer overflow. A malicious user can overwrite […]

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Windows Server 2019 — KB5058383 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5058383 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5058383 • MSRC update-guide entry Related CVEs: CVE-2025-32710 CVE-2025-29966 CVE-2025-29967 CVE-2025-29833 CVE-2024-49128 CVE-2025-55229 CVE-2025-47955 CVE-2025-29959  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: Use after free in Windows […]

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Ubuntu 22.04 — vim — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — vim — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • June 21, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 June 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8246-1 Related CVEs: CVE-2026-41411 CVE-2026-39881 CVE-2026-35177 CVE-2026-33412 CVE-2026-34982 CVE-2026-32249 CVE-2026-26269 CVE-2026-28419  +12 more Upstream summary: Michał Majchrowicz discovered that Vim’s zip plugin could overwrite arbitrary files. An attacker could possibly […]

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Common Problems 115988

cloud-init rewrites netplan and breaks static IP

🟠 High   ⏱ 5–30 min  Last verified: 21 June 2026 Affected versions: Ubuntu 26.04 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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openSUSE Leap 15.6 — qemu — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — qemu — multiple vulnerabilities (9 CVEs) — patch and remediation guide

  • June 21, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:1831 (see also SUSE bugzilla) Related CVEs: CVE-2025-11234 CVE-2024-4467 CVE-2024-7409 CVE-2025-14876 CVE-2026-0665 CVE-2025-12464 CVE-2024-8354 CVE-2024-4693  +1 more Upstream summary: A flaw was found in QEMU. If the QIOChannelWebsock object is freed […]

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Ubuntu 22.04 — net-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — net-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • June 21, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 21 June 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7537-2 Related CVEs: https://launchpad.net/bugs/2111912 CVE-2025-46836 Upstream summary: USN-7537-1 fixed a vulnerability in net-tools that caused a regression. This update fixes the problem. Original advisory details: It was discovered that net-tools […]

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Ubuntu 24.04 — gst-plugins-good1.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — gst-plugins-good1.0 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • June 21, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 21 June 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8131-1 Related CVEs: CVE-2026-3083 CVE-2026-3085 CVE-2025-47183 CVE-2025-47219 CVE-2024-47537 CVE-2024-47539 CVE-2024-47540 CVE-2024-47543  +12 more Upstream summary: It was discovered that GStreamer Good Plugins incorrectly handled certain X-QDM RTP payloads. A remote […]

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openSUSE Leap 15.6 — package — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — package — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • June 21, 2026
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-39324 CVE-2026-33026 CVE-2026-33030 CVE-2026-33032 CVE-2026-33634 CVE-2026-33990 CVE-2026-34041 CVE-2026-30836  +12 more Upstream summary: Rack::Session is a session management implementation for Rack. From 2.0.0 to before […]

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AIX AlmaLinux Alpine Linux authentication authorization Backup Recovery Boot Startup Cloud Integration Common Problems Cpu Memory Database Debian Debian 11 Debian 12 Bookworm Debian 13 Trixie DNS Firewall Fix Prevention FreeBSD FreeBSD 12 FreeBSD 13 FreeBSD 14 FreeBSD 15 Kernel Drivers Logging Monitoring Lvm Raid NetBSD Networking openSUSE Operations Oracle Linux Oracle Linux 8 Oracle Linux 9 Package Management Performance Proxy Security Hardening SLES Storage Disk Systemd Services Tls Ssl Troubleshooting ubuntu VPN windows server
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