CVE-2023-30456
MEDIUMCVSS 6.5/10EPSS 0.47%
Last modified
CVE-2023-30456 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | < 6.2.8 | — |
| Linux | Linux Kernel | 6.3 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-30456?
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.
How severe is CVE-2023-30456?
CVE-2023-30456 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.
How do I fix CVE-2023-30456?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2023-30456?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST