Linux

Ubuntu 16.04 — isc-dhcp — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — isc-dhcp — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 June 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5658-2 Related CVEs: CVE-2022-2928 CVE-2022-2929 CVE-2021-25217 CVE-2016-2774 CVE-2017-3144 CVE-2018-5732 CVE-2018-5733 Upstream summary: USN-5658-1 fixed vulnerabilities in DHCP. This update provides the corresponding updates for Ubuntu 16.04 ESM. Original advisory details: […]

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Oracle Linux 8 — xorg-x11-server and xorg-x11-server-Xwayland — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — xorg-x11-server and xorg-x11-server-Xwayland — vulnerability — patch and remediation guide (ELSA-2022-1917)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1917 Related CVEs: CVE-2021-4010 CVE-2021-4011 CVE-2021-4008 CVE-2021-4009 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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Arch Linux — containerd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — containerd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202012-8 Related CVEs: CVE-2020-15257 CVE-2021-32760 Upstream summary: Type: privilege escalation. Status: Fixed. Affected: 1.4.2-2. Fixed in: 1.4.3-1. Group: AVG-1309. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Amazon Linux 2 — kernel-livepatch-4.14.355-280.652 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.355-280.652 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2025-252 Related CVEs: CVE-2022-49935 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: check if the new fence is really later (CVE-2022-49935) Table of contents Symptom […]

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Oracle Linux 8 — .NET Core 3.1 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core 3.1 security and bugfix update (ELSA-2022-5061)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5061 Related CVEs: CVE-2022-30184 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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AlmaLinux 8 — snappy — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — snappy — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:4600 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 120678

Debian 11 – Podman image pulls fail due to certificate trust issues

🟡 Medium   ⏱ 5–30 min  Last verified: 13 June 2022 Affected versions: Debian 11 📖 ~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 11 — php-horde-css-parser — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — php-horde-css-parser — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-13756 Upstream summary: Sabberworm PHP CSS Parser before 8.3.1 calls eval on uncontrolled data, possibly leading to remote code execution if the function allSelectors() or getSelectorsBySpecificity() is called […]

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Debian 11 — module-assistant — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — module-assistant — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-3121 Upstream summary: A rule file in module-assistant before 0.9.10 causes a temporary file to be created insecurely, which allows local users to conduct unauthorized operations. Table of […]

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AlmaLinux 8 — pciutils — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — pciutils — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2021:1658 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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