CVE-2021-26339

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    CVE-2021-26339

    Published: 11 May 2022Last Modified: 10 Mar 2026

    Summary:

    Details: A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.

    References: , https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027, https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028

    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-2021-26339 | CVE-DB