Common Problems

Common Problems 117603

Apache Cannot Allocate Shared Memory

🟠 High   ⏱ 5–30 min  Last verified: 18 March 2021 Affected versions: 20.04 📖 ~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 […]

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openSUSE Tumbleweed — python36-Babel — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-Babel — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:1553-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-42771 Upstream summary: Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to […]

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Ubuntu 20.04 — pyyaml — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — pyyaml — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4940-1 Related CVEs: CVE-2020-14343 Upstream summary: It was discovered that PyYAML incorrectly handled untrusted YAML files with the FullLoader loader. A remote attacker could possibly use this issue to execute […]

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Gentoo Linux — app-backup/tsm — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-backup/tsm — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202209-02 Related CVEs: CVE-2021-3711 CVE-2021-3712 CVE-2021-4104 CVE-2021-29672 CVE-2021-39048 Upstream summary: Multiple vulnerabilities have been discovered in IBM Spectrum Protect. Please review the CVE identifiers referenced below for details. Table of contents Symptom […]

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Oracle Linux 8 — glibc — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — glibc — vulnerability — patch and remediation guide (ELSA-2021-9280)

🟠 High   ⏱ 15–60 min  Last verified: 18 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9280 Related CVEs: CVE-2021-3326 CVE-2019-25013 CVE-2020-27618 CVE-2016-10228 CVE-2019-9169 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Common Problems 117922

dpkg Interrupted, You Must Manually Run dpkg –configure -a

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 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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Common Problems 112533

Windows Server 2019 — Asymmetric routing through multi-homed NICs triggers firewall state drops — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 17 March 2021 Affected versions: Windows Server 2019 📖 ~2 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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Oracle Linux 8 — tracepath6 does not parse destination IPv6 address correctly — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — tracepath6 does not parse destination IPv6 address correctly

🟠 High   ⏱ 5–30 min  Last verified: 17 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 29540588 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 […]

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Ubuntu 18.04 — gsl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — gsl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6472-1 Related CVEs: CVE-2020-35357 Upstream summary: It was discovered that GNU Scientific Library incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially […]

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