Fix Prevention

Ubuntu 18.04 — libarchive — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libarchive — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • June 1, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 1 June 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8292-1 Related CVEs: CVE-2026-4424 CVE-2026-4426 CVE-2026-5121 CVE-2019-19221 CVE-2025-25724 CVE-2025-5916 CVE-2025-5917 CVE-2026-4111  +12 more Upstream summary: It was discovered that libarchive incorrectly handled certain RAR archives. An attacker could possibly use […]

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Common Problems 116071

Ubuntu 26.04 LTS – Docker permission denied for non-root user – Fix & Prevention

  • June 1, 2026
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 1 June 2026 Affected versions: Ubuntu 26.04 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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Red Hat Enterprise Linux 7 — python-s3transfer — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 7 — python-s3transfer — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • June 1, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 7 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:2911 Related CVEs: CVE-2026-21441 CVE-2025-66471 CVE-2025-66418 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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How to Create Python Virtual Environments on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Create Python Virtual Environments on FreeBSD 15

Introduction Deploying create python virtual environments 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 + ports […]

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How to Set Up an SLES 16 Template in VMware — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up an SLES 16 Template in VMware

Introduction This tutorial covers How to Set Up an SLES 16 Template in VMware on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: […]

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How to Set Up a DNS Server with Bind9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure DKIM, SPF and DMARC on Ubuntu 26.04

  • May 31, 2026
  • Linux
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DKIM (DomainKeys Identified Mail), SPF (Sender Policy Framework), and DMARC (Domain-based Message Authentication, Reporting and Conformance) are three DNS-based email authentication standards that protect your domain from spoofing and significantly improve email deliverability. This guide configures all three on Ubuntu 26.04 LTS with Postfix. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]

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How to Configure Caddy Web Server on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure Caddy Web Server on SLES 16

Introduction This tutorial covers How to Configure Caddy Web Server on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper […]

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NetBSD 10.0 — redis — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — redis — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 31, 2026
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2022-24735 CVE-2022-35951 CVE-2025-46817 CVE-2025-49844 CVE-2015-8080 CVE-2013-7458 CVE-2016-10517 CVE-2018-11218  +12 more Upstream summary: pkgsrc audit-packages flagged redis<6.2.7 for vulnerability class 'code-execution'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2022-24735 Table of contents Symptom & Impact Environment […]

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IBM AIX 7.3 — CVE-2026-1262 — information disclosure — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2026-1262 — information disclosure — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 31 May 2026 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2026-1262, IBM Support Bulletin CVE: CVE-2026-1262 NVD summary: IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6 is affected by an information disclosure vulnerability. References: www.ibm.com/support/pages/node/7266748 Table of contents Symptom & Impact Environment & […]

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