Common Problems

Debian 10 — kitty — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — kitty — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 January 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-35605 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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Arch Linux — nextcloud-app-mail — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — nextcloud-app-mail — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-41 Related CVEs: CVE-2021-32707 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 1.9.5-2. Fixed in: 1.10.1-1. Group: AVG-2145. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Arch Linux — nextcloud — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — nextcloud — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-22 Related CVEs: CVE-2021-32741 CVE-2021-32734 CVE-2021-32733 CVE-2021-32726 CVE-2021-32725 CVE-2021-32705 CVE-2021-32703 CVE-2021-32688  +4 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 21.0.2-1. Fixed in: 21.0.3-1. Group: AVG-2144. Table of contents […]

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Oracle Linux 8 — osinfo-db and libosinfo — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — osinfo-db and libosinfo — security and stability fixes — required update (ELSA-2019-3387)

🟢 Low   ⏱ 5–15 min  Last verified: 29 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3387 Related CVEs: CVE-2019-13313 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 118439

Ubuntu 16.04 LTS UFW Rules Block Return Traffic

🟡 Medium   ⏱ 5–30 min  Last verified: 29 January 2021 Affected versions: 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 115625

RHEL 7 systemctl Service Restart Loop Triggered by OOM Kills

🟠 High   ⏱ 5–30 min  Last verified: 29 January 2021 Affected versions: RHEL 7 📖 ~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 — py3-impacket — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — py3-impacket — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.9.23-r0 📖 ~4 min read  •  Source: Alpine secdb entry — py3-impacket 0.9.23-r0 Related CVEs: CVE-2021-31800 Upstream summary: Alpine community repository for vedge ships py3-impacket 0.9.23-r0 which addresses CVE-2021-31800. Table of contents Symptom & Impact Environment […]

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openSUSE Tumbleweed — fossil — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — fossil — 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 security advisory (see also SUSE bugzilla) Related CVEs: CVE-2017-17459 CVE-2020-24614 Upstream summary: http_transport.c in Fossil before 2.4, when the SSH sync protocol is used, allows user-assisted remote attackers to execute arbitrary commands via […]

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