cve/2023/CVE-2023-30456.md

### [CVE-2023-30456](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-30456)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### 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.

### POC

#### Reference
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8

#### Github
No PoCs found on GitHub currently.