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CVE-2023-53319

kernel: Linux kernel KVM: Denial of Service due to incorrect kvm_arm_init failure handling in finalize_pkvm

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 16, 2025

Updated · August 11, 2026

Description

A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) for arm64 architectures. This vulnerability arises from a lack of synchronization between the finalize_pkvm() and kvm_arm_init() initialization calls. A local attacker with low privileges could exploit this by triggering a scenario where finalize_pkvm() proceeds despite a failure in kvm_arm_init(), leading to a kernel panic and a Denial of Service (DoS) on the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-820 · Missing Synchronization