Common Problems

Common Problems 117405

Failed to Fetch Repository 404 After Mirror Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 11 February 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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Ubuntu 20.04 — golang-1.14 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — golang-1.14 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 February 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4758-1 Related CVEs: CVE-2020-24553 Upstream summary: It was discovered that Go applications incorrectly handled uploaded content. If a user were tricked into visiting a malicious page, a remote attacker could […]

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Gentoo Linux — sys-libs/binutils-libs — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-libs/binutils-libs — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202208-30 Related CVEs: CVE-2021-3487 CVE-2021-3530 CVE-2021-3549 CVE-2021-20197 CVE-2021-20284 CVE-2021-20294 CVE-2021-45078 Upstream summary: Multiple vulnerabilities have been discovered in GNU Binutils. Please review the CVE identifiers referenced below for details. Table of contents […]

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

Ubuntu 18.04 — rake — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 February 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4295-1 Related CVEs: CVE-2020-8130 Upstream summary: It was discovered that Rake incorrectly handled certain files. An attacker could use this issue to possibly execute arbitrary commands. Table of contents Symptom […]

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Ubuntu 14.04 — python-babel — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — python-babel — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 February 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4962-1 Related CVEs: CVE-2021-20095 Upstream summary: It was discovered that Babel incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. Table of contents Symptom […]

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Debian 9 — mysql-connector-java — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — mysql-connector-java — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 February 2021 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-2875 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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Oracle Linux 8 — java-1.8.0-openjdk — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-1.8.0-openjdk — security and stability fixes — required update (ELSA-2021-3893)

🟠 High   ⏱ 15–60 min  Last verified: 10 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3893 Related CVEs: CVE-2021-35564 CVE-2021-35561 CVE-2021-35588 CVE-2021-35550 CVE-2021-35556 CVE-2021-35586 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 118964

Ubuntu 14.04 LTS NTP Drift Breaks TLS Validation

🟡 Medium   ⏱ 5–30 min  Last verified: 10 February 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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SLES 12 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 10 February 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:3065-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-12861 CVE-2020-12862 CVE-2020-12863 CVE-2020-12864 CVE-2020-12865 CVE-2020-12866 CVE-2020-12867 CVE-2017-6318 Upstream summary: A heap buffer overflow in SANE Backends before 1.0.30 allows a malicious device connected to […]

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Common Problems 117626

Ubuntu 20.04 Severe Slowdowns From Swap Thrashing

🟡 Medium   ⏱ 5–30 min  Last verified: 10 February 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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