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Amazon Linux 2023 — mod_auth_openidc — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — mod_auth_openidc — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1188 Related CVEs: CVE-2025-31492 Upstream summary: mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. Prior […]

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Common Problems 111187

Windows Server 2025 — VM VHD/VHDX growing unbounded on fixed-size disk due to dynamic expansion — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 July 2025 Affected versions: Windows Server 2025 📖 ~2 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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Debian 12 — libfcgi-perl — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libfcgi-perl — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 July 2025 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2766 CVE-2012-6687 CVE-2025-40907 Upstream summary: The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during […]

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Windows Server 2025 — KB5053638 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2025

Windows Server 2025 — KB5053638 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5053638 • MSRC update-guide entry Related CVEs: CVE-2025-24035 CVE-2025-24045 CVE-2025-24064 CVE-2025-24084 CVE-2025-26645 CVE-2024-9157 CVE-2025-24044 CVE-2025-24987  +12 more Affected components: Windows Server 2025 Microsoft summary: Sensitive data storage in improperly locked memory in […]

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CentOS Stream 9 — jackson-core — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — jackson-core — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 July 2025 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:12280 Related CVEs: CVE-2025-52999 Upstream summary: Core part of Jackson that defines Streaming API as well as basic shared abstractions. Security Fix(es): * com.fasterxml.jackson.core/jackson-core: jackson-core Potential StackoverflowError (CVE-2025-52999) For more details […]

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How to Configure a Static IP Address with Netplan on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure a Static IP Address with Netplan on Ubuntu 24.04

Ubuntu 24.04 LTS uses Netplan to manage network configuration. By default, servers use DHCP which can result in IP address changes. This guide configures a static IP address using Netplan on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Knowledge of your network […]

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AlmaLinux 8 — perl-Algorithm-Diff — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — perl-Algorithm-Diff — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:8096 Related CVEs: CVE-2025-40909 CVE-2023-47038 Upstream summary: Perl is a high-level programming language that is commonly used for system administration utilities and web programming. Security Fix(es): * perl: Perl threads have a […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-28048)

🟠 High   ⏱ 15–60 min  Last verified: 19 July 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-28048 Related CVEs: CVE-2024-43876 CVE-2024-43877 CVE-2025-22058 CVE-2025-23143 CVE-2025-38678 CVE-2025-39880 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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openSUSE Tumbleweed — zk — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — zk — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:0439-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-58181 Upstream summary: SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request, allowing an attacker to cause […]

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Common Problems 114018

RHEL 10 DNF Lock File Contention Blocks Automated Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 19 July 2025 Affected versions: RHEL 10 📖 ~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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