Operations

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 Configure RDS Licensing on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure RDS Licensing on Windows Server 2012 R2

How to Configure RDS Licensing on Windows Server 2012 R2 Remote Desktop Services requires Client Access Licenses (CALs) for each user or device that connects to RD Session Host servers. Without properly configured and activated RDS licensing, sessions are limited to a 120-day grace period before connections are refused. The RD Licensing role service manages […]

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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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FreeBSD 13 — openzfs-kmod — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — openzfs-kmod — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sysutils/openzfs-kmod — critical permissions issues Upstream summary: Andrew Walker reports: Issue 1: Users are always granted permissions to cd into a directory. The check for whether execute is present on […]

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FreeBSD 13 — p5-Dancer — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — p5-Dancer — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: p5-Dancer — possible to abuse session cookie values Upstream summary: Russell Jenkins reports: It was possible to abuse session cookie values so that file-based session stores such as Dancer::Session::YAML or […]

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