Kernel Drivers

Ubuntu 16.04 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 April 2024 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7094-1 Related CVEs: CVE-2019-20382 CVE-2020-13765 CVE-2020-1983 CVE-2020-7039 CVE-2020-8608 CVE-2021-3592 CVE-2021-3594 CVE-2023-3019  +12 more Upstream summary: It was discovered that QEMU incorrectly handled memory during certain VNC operations. A remote attacker […]

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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2024-12260)

🟠 High   ⏱ 15–60 min  Last verified: 3 April 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12260 Related CVEs: CVE-2024-1086 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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SLES 12 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — qemu — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 April 2024 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory RHSA-2024:9136 (see also SUSE bugzilla) Related CVEs: CVE-2024-7409 CVE-2021-3750 CVE-2023-3354 CVE-2023-3180 CVE-2023-2861 CVE-2023-1544 CVE-2021-3929 CVE-2021-4206  +12 more Upstream summary: A flaw was found in the QEMU NBD Server. This vulnerability allows a […]

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Common Problems 114454

firewalld Blocks Required Application Port

🟡 Medium   ⏱ 5–30 min  Last verified: 31 March 2024 📖 ~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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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-20100)

🟠 High   ⏱ 15–60 min  Last verified: 31 March 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20100 Related CVEs: CVE-2024-38538 CVE-2024-53101 CVE-2024-56567 CVE-2024-53194 CVE-2024-53217 CVE-2024-56756 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Amazon Linux 2 — kernel-livepatch-4.14.355-280.695 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.355-280.695 — 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-2025-271 Related CVEs: CVE-2023-53530 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Use raw_smp_processor_id() instead of smp_processor_id() (CVE-2023-53530) Table of contents Symptom & Impact […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2024-12546)

🟠 High   ⏱ 15–60 min  Last verified: 30 March 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-12546 Related CVEs: CVE-2024-41090 CVE-2024-41091 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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Amazon Linux 2 — kernel-livepatch-5.10.218-206.860 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.218-206.860 — multiple vulnerabilities (4 CVEs) — 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-2024-187 Related CVEs: CVE-2022-48666 CVE-2024-41090 CVE-2024-41091 CVE-2024-39480 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix a use-after-free (CVE-2022-48666) kernel: virtio-net: tap: mlx5_core short […]

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Amazon Linux 2023 — kernel-livepatch-6.1.55-75.123 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.55-75.123 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-023 Related CVEs: CVE-2023-5090 CVE-2023-5197 CVE-2023-5717 Upstream summary: x86: KVM: SVM: always update the x2avic msr interception (CVE-2023-5090) A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2023-13044)

🟠 High   ⏱ 15–60 min  Last verified: 27 March 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-13044 Related CVEs: CVE-2023-5178 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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CHAT