Linux

Oracle Linux 8 — .NET Core on Red Hat Enterprise Linux 8 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core on Red Hat Enterprise Linux 8 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2471 Related CVEs: CVE-2020-1108 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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Common Problems 121524

Debian 9 – kernel or grub updates fail because /boot is full

🟠 High   ⏱ 5–30 min  Last verified: 7 February 2020 Affected versions: Debian 9 📖 ~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 117977

Ubuntu 18.04 UFW Rules Not Applied After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 7 February 2020 📖 ~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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openSUSE Tumbleweed — zypper — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2017:2111-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-7436 CVE-2017-9269 Upstream summary: In libzypp before 20170803 it was possible to retrieve unsigned packages without a warning to the user which could lead to […]

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How to Configure Collectd on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Collectd on Debian 10

Introduction This guide explains how to Configure Collectd on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the standard repositories […]

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openSUSE Tumbleweed — fvwm2 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — fvwm2 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2006-5969 Upstream summary: CRLF injection vulnerability in the evalFolderLine function in fvwm 2.5.18 and earlier allows local users to execute arbitrary commands via carriage returns […]

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Ubuntu 14.04 — ghostscript — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — ghostscript — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 February 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3915-1 Related CVEs: CVE-2019-3835 CVE-2019-3838 https://launchpad.net/bugs/1817308 https://launchpad.net/bugs/1815339 CVE-2019-6116 https://launchpad.net/bugs/1806517 CVE-2018-19409 CVE-2018-19475  +12 more Upstream summary: It was discovered that Ghostscript incorrectly handled certain PostScript files. If a user or automated […]

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SLES 15 — ldns — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — ldns — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 February 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:0801-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-1000231 CVE-2020-19860 CVE-2020-19861 CVE-2017-1000232 Upstream summary: A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors. Table of contents Symptom & […]

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How to Use journalctl for Systemd Log Analysis on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Use journalctl for Systemd Log Analysis on RHEL 7

How to Use journalctl for Systemd Log Analysis on RHEL 7 On RHEL 7, the traditional syslog infrastructure is complemented — and in many cases replaced — by the systemd journal, managed by systemd-journald. The journalctl command is your primary interface for querying, filtering, and exporting log data collected by this service. Unlike flat text […]

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