CVE-2023-30456
First published: Mon Apr 10 2023(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.3 | 6.3 |
| Linux Kernel | <6.2.8 | |
| Linux Kernel | =6.3-rc1 | |
| Linux Kernel | =6.3-rc2 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- 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
- https://github.com/torvalds/linux/commit/112e66017bff7f2837030f34c2bc19501e9212d5
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://security.netapp.com/advisory/ntap-20230511-0007/
- https://access.redhat.com/errata/RHSA-2023:6583
- https://access.redhat.com/errata/RHSA-2023:6901
- https://access.redhat.com/errata/RHSA-2023:7077
- https://access.redhat.com/errata/RHSA-2024:0930
- https://access.redhat.com/errata/RHSA-2024:1404
- https://bugzilla.redhat.com/show_bug.cgi?id=2188468
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-30456
- https://nvd.nist.gov/vuln/detail/CVE-2023-30456
- https://launchpad.net/bugs/cve/CVE-2023-30456
- https://security-tracker.debian.org/tracker/CVE-2023-30456
- https://ubuntu.com/security/CVE-2023-30456
- https://git.kernel.org/linus/112e66017bff7f2837030f34c2bc19501e9212d5
- https://www.ibm.com/support/pages/node/7172423 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-30456?
CVE-2023-30456 is considered a high-severity vulnerability due to the lack of consistency checks in nVMX on x86_64.
How do I fix CVE-2023-30456?
To fix CVE-2023-30456, upgrade the Linux kernel to version 6.3 or later, or apply the recommended patches.
Which versions of the Linux kernel are affected by CVE-2023-30456?
CVE-2023-30456 affects all versions of the Linux kernel prior to 6.2.8.
What components are impacted by CVE-2023-30456?
CVE-2023-30456 impacts the nVMX functionality in the Linux kernel on x86_64 architectures.
Is there a workaround for CVE-2023-30456 until a fix is applied?
There are no specific workarounds for CVE-2023-30456; the best action is to apply the fix as soon as possible.
- agent/type
- agent/first-publish-date
- agent/author
- agent/severity
- agent/remedy
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2023-30456
- agent/software-canonical-lookup
- agent/trending
- agent/source
- agent/references
- agent/description
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/mitre-cve
- source/MITRE
- collector/nvd-api
- source/NVD
- agent/weakness
- agent/last-modified-date
- agent/event
- collector/nvd-cve
- collector/ibm-support
- source/IBM
- agent/softwarecombine
- agent/tags
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- vendor/linux
- canonical/linux kernel
- version/linux kernel/6.3-rc1
- version/linux kernel/6.3-rc2
- vendor/ibm
- canonical/ibm security verify governance - identity manager
- version/ibm security verify governance - identity manager/isvg 10.0.2
- package-manager/debian