What is CVE-2023-30456?

CVE-2023-30456 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10. CVE-2023-30456 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-30456?

CVE-2023-30456 has a CVSS score of 6.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

Is there a patch available for CVE-2023-30456?

No patch is currently available for CVE-2023-30456. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-30456 actively exploited?

CVE-2023-30456 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-30456

Medium

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.

Package Linux Kernel

Published 2023-04-10

Last modified 2025-03-19

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-754

CVE-2023-30456 is classified as CWE-754

See CWE-754 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2023-30456 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

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

Details

CVE ID CVE-2023-30456

Severity Medium

CVSS score 6.5 / 10

CVSS version 3.1

Published 2023-04-10

Modified 2025-03-19

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-30456?

CVE-2023-30456 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10 . CVE-2023-30456 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-30456?

CVE-2023-30456 has a CVSS score of 6.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Is there a patch available for CVE-2023-30456?

No patch is currently available for CVE-2023-30456. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-30456 actively exploited?

No — CVE-2023-30456 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.