Linux

How to Add DNF Modules on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Add DNF Modules on CentOS Stream 9

Introduction Setting up add dnf modules on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Add DNF Modules on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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openSUSE Tumbleweed — libldap2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libldap2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2022-31253 CVE-2023-2953 Upstream summary: A Untrusted Search Path vulnerability in openldap2 of openSUSE Factory allows local attackers with control of the ldap user or group […]

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Common Problems 120053

Debian 12 – sshd fails to start because host key permissions are insecure

🟠 High   ⏱ 5–30 min  Last verified: 22 August 2023 Affected versions: Debian 12 📖 ~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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Alpine Linux 3.18 — postgresql-timescaledb — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — postgresql-timescaledb — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 2.9.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — postgresql-timescaledb 2.9.3-r0 Related CVEs: CVE-2023-25149 Upstream summary: Alpine community repository for vv3.18 ships postgresql-timescaledb 2.9.3-r0 which addresses CVE-2023-25149. Table of contents Symptom & Impact Environment […]

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Debian 12 — libcgi-application-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libcgi-application-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-7329 Upstream summary: The CGI::Application module before 4.50_50 and 4.50_51 for Perl, when run modes are not specified, allows remote attackers to obtain sensitive information (web queries and […]

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Debian 12 — argyll — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — argyll — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0583 CVE-2009-0584 CVE-2009-0792 CVE-2012-1616 CVE-2012-4405 Upstream summary: Multiple integer overflows in icc.c in the International Color Consortium (ICC) Format library (aka icclib), as used in Ghostscript 8.64 and […]

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Debian 12 — pdftk — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — pdftk — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-37819 Upstream summary: PDF Labs pdftk-java v3.2.3 was discovered to contain an infinite loop via the component /text/pdf/PdfReader.java. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Debian 12 — libtar — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libtar — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-4397 CVE-2013-4420 CVE-2021-33643 CVE-2021-33644 CVE-2021-33645 CVE-2021-33646 Upstream summary: Multiple integer overflows in the th_read function in lib/block.c in libtar before 1.2.20 allow remote attackers to cause a denial […]

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How to Configure LVM Thin Provisioning on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure LVM Thin Provisioning on Debian 12

Introduction Deploying configure lvm thin provisioning on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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