Linux

Common Problems 120161

Debian 12 – Nginx fails config test due to duplicate or invalid directives

🟠 High   ⏱ 5–30 min  Last verified: 13 August 2023 Affected versions: Debian 12 📖 ~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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Amazon Linux 2023 — kernel-livepatch-6.1.61-85.141 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.61-85.141 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-020 Related CVEs: CVE-2023-6111 Upstream summary: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_trans_gc_catchall did not remove […]

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Debian 12 — cron — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — cron — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2607 CVE-2017-9525 CVE-2019-9704 CVE-2019-9705 CVE-2019-9706 Upstream summary: do_command.c in Vixie cron (vixie-cron) 4.1 does not check the return code of a setuid call, which might allow local users […]

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Debian 12 — ulfius — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — ulfius — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-40540 Upstream summary: ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info->request NULL check for certain malformed HTTP requests. Table of contents Symptom & […]

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Common Problems 117457

Ubuntu 20.04 GNOME Shell High CPU Usage

🟡 Medium   ⏱ 5–30 min  Last verified: 13 August 2023 📖 ~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 12 — libappimage — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libappimage — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-25265 Upstream summary: AppImage libappimage before 1.0.3 allows attackers to trigger an overwrite of a system-installed .desktop file by providing a .desktop file that contains Name= with path […]

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Alpine Linux edge — texlive — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — texlive — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 20230506.66984-r0 📖 ~4 min read  •  Source: Alpine secdb entry — texlive 20230506.66984-r0 Related CVEs: CVE-2023-32700 Upstream summary: Alpine community repository for vedge ships texlive 20230506.66984-r0 which addresses CVE-2023-32700. Table of contents Symptom & Impact Environment […]

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Debian 12 — snmptrapfmt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — snmptrapfmt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-0050 Upstream summary: snmptrapfmt in Debian 3.0 allows local users to overwrite arbitrary files via a symlink attack on a temporary log file. Table of contents Symptom & […]

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Debian 12 — usemod-wiki — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — usemod-wiki — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-1397 Upstream summary: Cross-site scripting (XSS) vulnerability in UseModWiki 1.0 allows remote attackers to inject arbitrary web script or HTML via an argument to wiki.pl. Table of contents […]

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Debian 12 — freeplane — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — freeplane — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000069 Upstream summary: FreePlane version 1.5.9 and earlier contains a XML External Entity (XXE) vulnerability in XML Parser in mindmap loader that can result in stealing data from […]

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