CVE-2021-38578

    Dashboard / Vulnerabilities / CVE-2021-38578

    CVE-2021-38578

    Published: 3 Mar 2022Last Modified: 24 Oct 2026

    Summary:

    Details: Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

    References: https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html, https://www.insyde.com/security-pledge/SA-2023024, https://bugzilla.tianocore.org/show_bug.cgi?id=3387

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    edk2-stable202202

    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-2021-38578 | CVE-DB