Linux

Common Problems 123969

Oracle Linux 10 – dnf upgrade fails with modular dependency conflicts – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 July 2025 Affected versions: Oracle Linux 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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AlmaLinux 10 — poppler — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — poppler — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:0128 Related CVEs: CVE-2025-32365 Upstream summary: Poppler is a Portable Document Format (PDF) rendering library, used by applications such as Evince. Security Fix(es): * poppler: Out-of-Bounds Read in Poppler (CVE-2025-32365) For more […]

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Common Problems 116586

Ubuntu 24.04 LTS – GNOME Shell crashes repeatedly after extension changes – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 July 2025 Affected versions: Ubuntu 24.04 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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Common Problems 116580

Ubuntu 24.04 LTS – python3-venv missing prevents virtual environment creation – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 July 2025 Affected versions: Ubuntu 24.04 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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Common Problems 116564

Ubuntu 24.04 LTS – libvirt default network inactive and VMs have no connectivity – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 July 2025 Affected versions: Ubuntu 24.04 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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AlmaLinux 9 — krb5 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — krb5 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2024:9474 Related CVEs: CVE-2024-3596 CVE-2022-42898 CVE-2025-3576 CVE-2025-24528 CVE-2024-26458 CVE-2024-26461 CVE-2024-26462 CVE-2024-37370  +4 more Upstream summary: Kerberos is a network authentication system, which can improve the security of your network by eliminating the […]

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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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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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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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