CVE-2023-30456

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/112e66017bff7f2837030f34c2bc19501e9212d5 release notes
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8 patch
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html mailing list
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html mailing list
https://security.netapp.com/advisory/ntap-20230511-0007/
http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html

Frequently Asked Questions

What is the severity of CVE-2023-30456?
CVE-2023-30456 has been scored as a medium severity vulnerability.
How to fix CVE-2023-30456?
To fix CVE-2023-30456, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-30456 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-30456 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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