Linux

Common Problems 118483

Ubuntu 16.04 LTS – swap misconfiguration causes heavy swapping and latency – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 12 April 2022 Affected versions: Ubuntu 16.04 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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Alpine Linux edge — libgcrypt — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libgcrypt — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.9.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libgcrypt 1.9.4-r0 Related CVEs: CVE-2021-33560 CVE-2019-13627 CVE-2019-12904 CVE-2018-0495 Upstream summary: Alpine main repository for vedge ships libgcrypt 1.9.4-r0 which addresses CVE-2021-33560. Table of contents Symptom […]

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Debian 11 — t1utils — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — t1utils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-3905 Upstream summary: Buffer overflow in the set_cs_start function in t1disasm.c in t1utils before 1.39 allows remote attackers to cause a denial of service (crash) and possibly execute […]

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Oracle Linux 8 — python3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python3 — vulnerability — patch and remediation guide (ELSA-2021-1633)

🟡 Medium   ⏱ 10–30 min  Last verified: 12 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1633 Related CVEs: CVE-2020-27619 CVE-2021-3177 CVE-2020-26116 CVE-2021-23336 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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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-2022-9028)

🟠 High   ⏱ 15–60 min  Last verified: 12 April 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9028 Related CVEs: CVE-2022-0185 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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How to Install Prometheus and Grafana on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Prometheus and Grafana on RHEL 7

How to Install Prometheus and Grafana on RHEL 7 Prometheus and Grafana form one of the most popular open-source monitoring stacks available today. Prometheus is a time-series database and scraping engine that collects metrics from instrumented targets, while Grafana provides a rich visualization layer on top of that data. Together they give you real-time dashboards, […]

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How to Automate CentOS Stream 9 Deployment with Kickstart — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Automate CentOS Stream 9 Deployment with Kickstart

Introduction How to Automate CentOS Stream 9 Deployment with Kickstart on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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

Debian 11 — node-dot-prop — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-8116 Upstream summary: Prototype pollution vulnerability in dot-prop npm package versions before 4.2.1 and versions 5.x before 5.1.1 allows an attacker to add arbitrary properties to JavaScript language […]

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Debian 11 — rust-memoffset — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rust-memoffset — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-15553 Upstream summary: An issue was discovered in the memoffset crate before 0.5.0 for Rust. offset_of and span_of can cause exposure of uninitialized memory. Table of contents Symptom […]

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Debian 11 — libimage-exiftool-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libimage-exiftool-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-22204 CVE-2022-23935 Upstream summary: Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the malicious […]

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