Security Hardening

Amazon Linux 2023 — valkey — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — valkey — multiple vulnerabilities (10 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1471 Related CVEs: CVE-2025-67733 CVE-2026-21863 CVE-2025-46817 CVE-2025-46818 CVE-2025-46819 CVE-2025-49844 CVE-2025-32023 CVE-2025-48367  +2 more Upstream summary: Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a […]

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How to Configure Static File Serving with Nginx on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Static File Serving with Nginx on RHEL 10

  • May 25, 2026
  • Linux
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Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying configure static file serving with nginx both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Static File Serving with Nginx on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Common Problems 122175

PF State Table Exhaustion Under Traffic Spikes

🟡 Medium   ⏱ 5–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 15 📖 ~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 — charybdis — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — charybdis — security advisory — patch and remediation guide

  • May 25, 2026
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ircd-ratbox and charybdis — remote DoS vulnerability Upstream summary: atheme.org reports: All versions of Charybdis are vulnerable to a remotely-triggered crash bug caused by code originating from ircd-ratbox 2.0. (Incidentally, […]

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How to Set Up SonarQube Code Analysis on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up SonarQube Code Analysis on FreeBSD 15

Introduction Deploying set up sonarqube code analysis on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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

Amazon Linux 2023 — runfinch-finch — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1548 Related CVEs: CVE-2026-33186 CVE-2025-47912 CVE-2025-58183 CVE-2025-58185 CVE-2025-58186 CVE-2025-58187 CVE-2025-58188 CVE-2025-58189  +12 more Upstream summary: gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization […]

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FreeBSD 15 — dante — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — dante — security advisory — patch and remediation guide

  • May 25, 2026
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: fd_set — bitmap index overflow in multiple applications Upstream summary: 3APA3A reports: If programmer fails to check socket number before using select() or fd_set macros, it's possible to overwrite memory […]

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Amazon Linux 2023 — python-jwcrypto — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — python-jwcrypto — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • May 25, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1590 Related CVEs: CVE-2024-28102 CVE-2026-39373 Upstream summary: JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to 1.5.7, an unauthenticated attacker can exhaust server memory by sending crafted JWE […]

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