CVE-2021-45970

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    CVE-2021-45970

    Published: 5 Jan 2022Last Modified: 10 Mar 2026

    Summary:

    Details: An issue was discovered in IdeBusDxe in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (the status code saved at the CommBuffer+4 location).

    References: https://www.kb.cert.org/vuls/id/796611, , https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf, https://security.netapp.com/advisory/ntap-20220216-0004/, https://www.insyde.com/security-pledge

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-45970 | CVE-DB