Linux

Alpine Linux 3.18 — bluez — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — bluez — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 5.54-r0 📖 ~4 min read  •  Source: Alpine secdb entry — bluez 5.54-r0 Related CVEs: CVE-2020-0556 Upstream summary: Alpine main repository for vv3.18 ships bluez 5.54-r0 which addresses CVE-2020-0556. Table of contents Symptom & Impact Environment […]

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Debian 12 — knot — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — knot — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0486 CVE-2016-6171 CVE-2017-11104 Upstream summary: Knot DNS before 1.5.2 allows remote attackers to cause a denial of service (application crash) via a crafted DNS message. Table of contents […]

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Ubuntu 22.04 — wayland — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — wayland — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 July 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5614-1 Related CVEs: CVE-2021-3782 Upstream summary: It was discovered that Wayland incorrectly handled reference counting certain objects. An attacker could use this issue to cause Wayland to crash, resulting in […]

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Oracle Linux 8 — webkit2gtk3 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — webkit2gtk3 — vulnerability — patch and remediation guide (ELSA-2023-4202)

🟠 High   ⏱ 15–60 min  Last verified: 29 July 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4202 Related CVEs: CVE-2023-32435 CVE-2023-32439 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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

Oracle Linux 8 — frr — vulnerability — patch and remediation guide (ELSA-2024-2981)

🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-2981 Related CVEs: CVE-2023-46752 CVE-2023-41909 CVE-2023-41358 CVE-2023-31490 CVE-2023-46753 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 120106

Debian 12 Daemon Memory Leak Leading to OOM Kills

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2023 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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Alpine Linux 3.18 — strongswan — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — strongswan — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 5.9.8-r0 📖 ~4 min read  •  Source: Alpine secdb entry — strongswan 5.9.8-r0 Related CVEs: CVE-2022-40617 CVE-2023-41913 CVE-2023-26463 CVE-2021-45079 CVE-2021-41990 CVE-2021-41991 CVE-2018-17540 CVE-2018-16151  +5 more Upstream summary: Alpine main repository for vv3.18 ships strongswan 5.9.8-r0 which […]

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Common Problems 124617

Oracle Linux 9 – Common Problem 016 – Diagnosis and Fix

🔴 Critical   ⏱ 5–30 min  Last verified: 28 July 2023 Affected versions: Oracle Linux 9 📖 ~3 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 120175

Debian 12 Firewall Rules Block Required Service Ports

🟠 High   ⏱ 5–30 min  Last verified: 28 July 2023 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 12 — libclamunrar — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libclamunrar — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 July 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-6706 CVE-2019-1785 CVE-2019-1798 CVE-2023-40477 Upstream summary: A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other […]

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