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Common Problems 116120

Ubuntu 26.04 LTS TLS Failures Due to Outdated CA Certificates

đźź  High   ⏱ 5–30 min  Last verified: 18 June 2026 Affected versions: Ubuntu 26.04 LTS đź“– ~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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FreeBSD 15 — ossec-hids-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — ossec-hids-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 June 2026 Affected versions: FreeBSD 15 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: security/ossec-hids-* — root escalation via syscheck feature Related CVEs: CVE-2014-5284 CVE-2015-3222 Upstream summary: OSSEC reports: The CVE-2015-3222 vulnerability, which allows for root escalation via sys check has been fixed in […]

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Amazon Linux 2023 — perl-JSON-XS — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — perl-JSON-XS — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 đź“– ~4 min read  â€˘  Source: Amazon Linux advisory ALAS2023-2025-1200 Related CVEs: CVE-2025-40928 Upstream summary: JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified […]

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FreeBSD 13 — c-ares — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — c-ares — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 June 2026 Affected versions: FreeBSD 13 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: c-ares — Use After Free Related CVEs: CVE-2007-3152 CVE-2007-3153 CVE-2024-25629 CVE-2025-62408 Upstream summary: https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5 reports: c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum […]

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Amazon Linux 2023 — ecs-init — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — ecs-init — multiple vulnerabilities (20 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 đź“– ~4 min read  â€˘  Source: Amazon Linux advisory ALAS2023-2026-1552 Related CVEs: CVE-2026-25679 CVE-2026-27139 CVE-2026-27142 CVE-2026-33186 CVE-2025-65637 CVE-2025-47912 CVE-2025-58183 CVE-2025-58185  +12 more Upstream summary: url.Parse insufficiently validated the host/authority component and accepted some invalid URLs. (CVE-2026-25679) On Unix platforms, […]

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FreeBSD 15 — postgresql83-server — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — postgresql83-server — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 June 2026 Affected versions: FreeBSD 15 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: End of Life Ports Upstream summary: These packages have reached End of Life status and/or have been removed from the Ports Tree. They may contain undocumented security issues. Please take […]

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How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up UFW Firewall on Ubuntu 26.04

UFW (Uncomplicated Firewall) is the default firewall management tool on Ubuntu. It wraps iptables with a simplified interface, making it easy to allow or deny traffic by port, service name, or IP range. This guide shows you how to set up and manage UFW on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS […]

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How to Set Up VLAN Tagging on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up VLAN Tagging on FreeBSD 15

Introduction How to Set Up VLAN Tagging 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 […]

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FreeBSD 15 — mysql51-server — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — mysql51-server — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 June 2026 Affected versions: FreeBSD 15 đź“– ~4 min read  â€˘  Source: FreeBSD VuXML VuXML topic: End of Life Ports Upstream summary: These packages have reached End of Life status and/or have been removed from the Ports Tree. They may contain undocumented security issues. Please take […]

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Windows Server 2022 — KB5050182 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5050182 — security update — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 đź“– ~4 min read  â€˘  Source: Microsoft KB5050182 • MSRC update-guide entry Related CVEs: CVE-2025-21176 Affected components: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) Table of contents Symptom & Impact Environment […]

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