Security Hardening

Ubuntu 20.04 — linux-oracle — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — linux-oracle — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8273-1 Related CVEs: CVE-2024-50304 CVE-2026-23112 CVE-2026-23209 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533 CVE-2026-43033 CVE-2026-43077  +12 more Upstream summary: Several security issues were discovered in the Linux kernel. An attacker could possibly use these […]

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NetBSD 10.0 — ruby-activestorage80 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — ruby-activestorage80 — vulnerability — patch and remediation guide

  • January 16, 2026
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-24293 Upstream summary: pkgsrc audit-packages flagged ruby{32,33,34}-activestorage80<8.0.2.1 for vulnerability class 'command-injection'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-24293 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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Common Problems 122033

ZFS Dataset Fails to Mount at Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 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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IBM AIX 7.1 — CVE-2026-1015 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2026-1015 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 16 January 2026 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2026-1015, IBM Support Bulletin CVE: CVE-2026-1015 NVD summary: IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests […]

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AlmaLinux 10 — util-linux — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — util-linux — vulnerability — patch and remediation guide

  • January 16, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:1696 Related CVEs: CVE-2025-14104 Upstream summary: The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include the fdisk […]

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FreeBSD 13 — viewvc — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — viewvc — vulnerability — patch and remediation guide

  • January 16, 2026
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: viewvc — Arbitrary server filesystem content Related CVEs: CVE-2025-54141 Upstream summary: cmpilato reports: The ViewVC standalone web server (standalone.py) is a script provided in the ViewVC distribution for the purposes […]

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AlmaLinux 10 — dotnet9.0 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — dotnet9.0 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • January 16, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:8472 Related CVEs: CVE-2026-26171 CVE-2026-32178 CVE-2026-32203 CVE-2026-33116 CVE-2026-26127 CVE-2026-26130 Upstream summary: .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes […]

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FreeBSD 14 — py315-postorius — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 14

FreeBSD 14 — py315-postorius — vulnerability — patch and remediation guide

  • January 16, 2026
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2026 Affected versions: FreeBSD 14 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: postorius — XSS Related CVEs: CVE-2026-44742 Upstream summary: NIST reports: Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as […]

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AlmaLinux 10 — keylime — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — keylime — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • January 16, 2026
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:2225 Related CVEs: CVE-2026-1709 CVE-2025-13609 Upstream summary: Keylime is a TPM based highly scalable remote boot attestation and runtime integrity measurement solution. Security Fix(es): * keylime: Keylime: Authentication bypass allows unauthorized administrative […]

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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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