Linux

Common Problems 118076

Ubuntu 18.04 LTS – Docker daemon fails after kernel update with cgroup issues – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 18.04 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 119102

Ubuntu 14.04 LTS unattended-upgrades repeatedly fails

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: 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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SLES 15 — gpg2 — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — gpg2 — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:2719 (see also SUSE bugzilla) Related CVEs: CVE-2026-24882 CVE-2025-68973 CVE-2010-2547 CVE-2013-4402 CVE-2018-12020 CVE-2020-25125 CVE-2022-34903 CVE-2019-14855  +6 more Upstream summary: In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling […]

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Common Problems 116077

Ubuntu 26.04 LTS – NTP drift causes Kerberos and TLS authentication failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 26.04 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 120136

Debian 12 Postfix Queue Backlog Due to DNSBL Timeout

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 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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Debian 10 — python-django — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — python-django — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-14232 CVE-2019-19844 CVE-2020-13254 CVE-2020-7471 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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Common Problems 116574

Ubuntu 24.04 LTS – OpenSSH service running but not listening on expected interface – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 24.04 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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CentOS Stream 9 — python3.11-urllib3 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — python3.11-urllib3 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:1089 Related CVEs: CVE-2025-66418 CVE-2025-66471 CVE-2026-21441 CVE-2023-45803 CVE-2024-37891 CVE-2023-43804 Upstream summary: Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and […]

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Common Problems 117071

Ubuntu 22.04 LTS – OOM killer terminates critical services under load – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 22.04 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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SLES 16 — chrony — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — chrony — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2014-0021 CVE-2012-4502 CVE-2012-4503 CVE-2020-14367 CVE-2016-1567 Upstream summary: Chrony before 1.29.1 has traffic amplification in cmdmon protocol Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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