UBUNTU-CVE-2023-30456

    Dashboard / Vulnerabilities / UBUNTU-CVE-2023-30456

    UBUNTU-CVE-2023-30456

    Published: 10 Apr 2023Last Modified: 9 Sept 2026
    Upstream:
    CVE-2023-30456
    Aliases:
    USN-6033-1
    USN-6123-1
    USN-6124-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2023-30456, https://git.kernel.org/linus/112e66017bff7f2837030f34c2bc19501e9212d5, https://github.com/torvalds/linux/commit/112e66017bff7f2837030f34c2bc19501e9212d5, https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8, https://ubuntu.com/security/notices/USN-6033-1, https://ubuntu.com/security/notices/USN-6123-1, https://ubuntu.com/security/notices/USN-6124-1, https://ubuntu.com/security/notices/USN-6127-1, https://ubuntu.com/security/notices/USN-6130-1, https://ubuntu.com/security/notices/USN-6131-1, https://ubuntu.com/security/notices/USN-6132-1, https://ubuntu.com/security/notices/USN-6135-1, https://ubuntu.com/security/notices/USN-6149-1, https://ubuntu.com/security/notices/USN-6150-1, https://ubuntu.com/security/notices/USN-6162-1, https://ubuntu.com/security/notices/USN-6175-1, https://ubuntu.com/security/notices/USN-6186-1, https://ubuntu.com/security/notices/USN-6222-1, https://ubuntu.com/security/notices/USN-6256-1, https://ubuntu.com/security/notices/USN-6699-1, https://www.cve.org/CVERecord?id=CVE-2023-30456

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.13.0-197.248

    Affected versions

    3.11.0-12.19

    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
    UBUNTU-CVE-2023-30456 | CVE-DB