Linux

Common Problems 119056

Ubuntu 14.04 LTS – MySQL fails to start after abrupt shutdown – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 October 2021 Affected versions: Ubuntu 14.04 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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Common Problems 118593

Ubuntu 16.04 LTS – rsyslog forwarding fails to remote SIEM – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 October 2021 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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Common Problems 117616

Ubuntu 20.04 Locale Warnings in Terminal

🟡 Medium   ⏱ 5–30 min  Last verified: 16 October 2021 📖 ~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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Debian 11 — lapack — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lapack — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-4048 Upstream summary: An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack through version 3.10.0, as also used in OpenBLAS before […]

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

Debian 11 — jags — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3736 Upstream summary: ltdl.c in libltdl in GNU Libtool 1.5.x, and 2.2.6 before 2.2.6b, as used in Ham Radio Control Libraries, Q, and possibly other products, attempts to […]

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Debian 11 — ez-ipupdate — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ez-ipupdate — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0980 Upstream summary: Format string vulnerability in ez-ipupdate.c for ez-ipupdate 3.0.10 through 3.0.11b8, when running in daemon mode with certain service types in use, allows remote servers to […]

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Debian 11 — xserver-xorg-video-nouveau — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xserver-xorg-video-nouveau — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-3979 Upstream summary: A remote denial-of-service vulnerability exists in the way the Nouveau Display Driver (the default Ubuntu Nvidia display driver) handles GPU shader execution. A specially crafted […]

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AlmaLinux 8 — gd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — gd — multiple vulnerabilities (3 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-2020:4659 Related CVEs: CVE-2018-14553 CVE-2019-6977 CVE-2019-6978 Upstream summary: GD is an open source code library for the dynamic creation of images by programmers. GD creates PNG, JPEG, GIF, WebP, XPM, BMP images, […]

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