Operations

How to Set Up GoCD CI/CD on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up GoCD CI/CD on Debian 9

Introduction This guide explains how to Set Up GoCD CI/CD on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the […]

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Debian 11 — dwarfutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — dwarfutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-8538 CVE-2015-8750 CVE-2016-2050 CVE-2016-2091 CVE-2016-5027 CVE-2016-5028 CVE-2016-5029 CVE-2016-5030  +12 more Upstream summary: dwarf_leb.c in libdwarf allows attackers to cause a denial of service (SIGSEGV). Table of contents Symptom […]

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Debian 11 — node-eventsource — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-eventsource — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-1650 Upstream summary: Improper Removal of Sensitive Information Before Storage or Transfer in GitHub repository eventsource/eventsource prior to v2.0.2. Table of contents Symptom & Impact Environment & Reproduction […]

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AlmaLinux 8 — compat-exiv2-026 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — compat-exiv2-026 — multiple vulnerabilities (4 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-2022:1797 Related CVEs: CVE-2020-18898 CVE-2021-31292 CVE-2021-37618 CVE-2021-37619 Upstream summary: Exiv2 is a C++ library to access image metadata, supporting read and write access to the Exif, IPTC and XMP metadata, Exif MakerNote […]

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Ubuntu 22.04 — tinygltf — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — tinygltf — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 September 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7129-1 Related CVEs: CVE-2022-3008 Upstream summary: It was discovered that TinyGLTF performed file path expansion in an insecure way on certain inputs. An attacker could possibly use this issue to […]

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

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2022-9265)

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9265 Related CVEs: CVE-2022-1158 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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FreeBSD 13 — mariadb105-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mariadb105-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: MariaDB — DoS vulnerability in InnoDB Related CVEs: CVE-2018-25032 CVE-2019-17543 CVE-2020-14672 CVE-2020-14760 CVE-2020-14765 CVE-2020-14769 CVE-2020-14771 CVE-2020-14773  +12 more Upstream summary: MariaDB reports: Easily exploitable vulnerability allows high privileged attacker with […]

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How to Install Grafana on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Grafana on Debian 11

Introduction How to Install Grafana on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. This tutorial […]

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Common Problems 120524

Debian 11 Repository 404 Not Found for Enabled Mirror

🟡 Medium   ⏱ 5–30 min  Last verified: 2 September 2022 Affected versions: Debian 11 📖 ~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 116922

Ubuntu 22.04 Bluetooth device not detected

🟡 Medium   ⏱ 5–30 min  Last verified: 2 September 2022 📖 ~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 & Cross-Refs References & Further […]

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