Troubleshooting

SLES 12 — libdlm — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libdlm — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 February 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2019:1791-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-12779 Upstream summary: libqb before 1.0.5 allows local users to overwrite arbitrary files via a symlink attack, because it uses predictable filenames (under /dev/shm and […]

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openSUSE Tumbleweed — ldns — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ldns — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0438-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-1000231 CVE-2020-19860 CVE-2020-19861 CVE-2011-3581 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 Configure Data Deduplication on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Data Deduplication on Windows Server 2016

How to Configure Windows Server 2016 Data Deduplication Data Deduplication, also known as Dedup, is a Windows Server feature that reduces storage consumption by eliminating redundant data on a volume. It identifies duplicate chunks across files and stores only one copy of each unique chunk, replacing duplicates with references to the stored chunk. Windows Server […]

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Common Problems 121110

Debian 10 – Conflicting Time Services Cause Unstable Sync – Single Authority Model

🟡 Medium   ⏱ 5–30 min  Last verified: 16 February 2020 Affected versions: Debian 10 📖 ~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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How to Tune Kernel Parameters with sysctl on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Tune Kernel Parameters with sysctl on Debian 10

Introduction Deploying tune kernel parameters with sysctl on debian 10 on a Debian 10 Buster 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 Before […]

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Common Problems 112947

Windows Server 2016 — DISM RestoreHealth fails because component store is corrupt and unrepairable — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 February 2020 Affected versions: Windows Server 2016 📖 ~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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FreeBSD 12 — zabbix3-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — zabbix3-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Zabbix — Remote code execution Related CVEs: CVE-2017-2824 CVE-2020-11800 Upstream summary: Zabbix reports: Fixed security vulnerability cve-2020-11800 (remote code execution). (ZBX-17600) Table of contents Symptom & Impact Environment & Reproduction […]

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openSUSE Tumbleweed — libxkbcommon0 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libxkbcommon0 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2018:3802-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-15856 Upstream summary: An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local […]

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FreeBSD 12 — a2ps-a — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — a2ps-a — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: a2ps — insecure temporary file creation Related CVEs: CVE-2004-1170 CVE-2004-1377 Upstream summary: A Secunia Security Advisory reports that Javier Fernández-Sanguino Peña has found temporary file creation vulnerabilities in the fixps […]

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FreeBSD 12 — elinks — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — elinks — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: elinks — buffer overflow vulnerability Related CVEs: CVE-2008-7224 Upstream summary: SecurityFocus reports: ELinks is prone to an off-by-one buffer-overflow vulnerability because the application fails to accurately reference the last element […]

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