CVE-2023-30456

kernel: KVM: nVMX: missing consistency checks for CR0 and CR4

Published Apr 10, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3403-1 linux security update
Debian DLA Debian DLA DLA-3404-1 linux-5.10 security update
EUVD EUVD EUVD-2023-34873 An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4.
Ubuntu USN Ubuntu USN USN-6033-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6123-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6124-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6127-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6130-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6131-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6132-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6135-1 Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6149-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6150-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6162-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6175-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6186-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6222-1 Linux kernel (Xilinx ZynqMP) vulnerabilities
Ubuntu USN Ubuntu USN USN-6256-1 Linux kernel (IoT) vulnerabilities
Ubuntu USN Ubuntu USN USN-6699-1 Linux kernel vulnerabilities
History
Type Values Removed Values Added
Weaknesses CWE-754
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Mar 19, 2025, 3:43 PM
Reserved
Apr 10, 2023, 12:00 AM
Status
Modified
Published
Apr 10, 2023, 2:15 AM
Modified
Jun 17, 2026, 5:54 AM
Severity
Moderate
Public date
Apr 10, 2023, 12:00 AM