Linux

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

Debian 12 — ntirpc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 July 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-8779 Upstream summary: rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation […]

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Alpine Linux 3.19 — libpcap — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — libpcap — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 1.9.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libpcap 1.9.1-r0 Related CVEs: CVE-2018-16301 CVE-2019-15161 CVE-2019-15162 CVE-2019-15163 CVE-2019-15164 CVE-2019-15165 Upstream summary: Alpine main repository for vv3.19 ships libpcap 1.9.1-r0 which addresses CVE-2018-16301. Table of […]

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Ubuntu 16.04 — golang-go.crypto — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — golang-go.crypto — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 31 July 2024 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7839-1 Related CVEs: CVE-2024-45337 Upstream summary: Damien Tournoud, Patrick Dawkins, Vince Parker, and Jules Duvivier discovered that Go Cryptography incorrectly handled public keys during SSH operations. An attacker could possibly […]

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Alpine Linux 3.18 — poppler — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — poppler — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 0.80.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — poppler 0.80.0-r0 Related CVEs: CVE-2019-9959 CVE-2020-27778 Upstream summary: Alpine main repository for vv3.18 ships poppler 0.80.0-r0 which addresses CVE-2019-9959. Table of contents Symptom & Impact […]

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Alpine Linux 3.18 — e2fsprogs — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — e2fsprogs — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.45.5-r0 📖 ~4 min read  •  Source: Alpine secdb entry — e2fsprogs 1.45.5-r0 Related CVEs: CVE-2019-5188 CVE-2019-5094 Upstream summary: Alpine main repository for vv3.18 ships e2fsprogs 1.45.5-r0 which addresses CVE-2019-5188. Table of contents Symptom & Impact […]

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Debian 12 — trafficserver — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — trafficserver — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 31 July 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-0256 CVE-2014-10022 CVE-2014-3525 CVE-2014-3624 CVE-2015-3249 CVE-2015-5168 CVE-2015-5206 CVE-2016-5396  +12 more Upstream summary: Apache Traffic Server 2.0.x and 3.0.x before 3.0.4 and 3.1.x before 3.1.3 does not properly allocate […]

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Oracle Linux 9 — dnsmasq — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — dnsmasq — security and stability fixes — required update (ELSA-2022-8070)

🟡 Medium   ⏱ 10–30 min  Last verified: 30 July 2024 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8070 Related CVEs: CVE-2022-0934 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 120118

Debian 12: High CPU from runaway cron task

🟡 Medium   ⏱ 5–30 min  Last verified: 30 July 2024 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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Common Problems 117618

Ubuntu 20.04 LTS – UFW blocks SSH access after firewall enable

🔴 Critical   ⏱ 5–30 min  Last verified: 30 July 2024 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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Alpine Linux 3.20 — vlc — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — vlc — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 3.0.9.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — vlc 3.0.9.2-r0 Related CVEs: CVE-2019-19721 CVE-2020-6071 CVE-2020-6072 CVE-2020-6073 CVE-2020-6077 CVE-2020-6078 CVE-2020-6079 CVE-2019-13602  +3 more Upstream summary: Alpine community repository for vv3.20 ships vlc 3.0.9.2-r0 which […]

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