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    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.

    Published:Apr 10, 2023
    Last Modified:Mar 19, 2025
    EPS:Apr 10, 2023
    EPSS Score:0.00009
    CVSS Score:6.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    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/
    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/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High