CVE-2021-22547

    Dashboard / Vulnerabilities / CVE-2021-22547

    CVE-2021-22547

    Published: 4 May 2021Last Modified: 9 Jul 2026

    Summary:

    Details: In IoT Devices SDK, there is an implementation of calloc() that doesn't have a length check. An attacker could pass in memory objects larger than the buffer and wrap around to have a smaller buffer than required, allowing the attacker access to the other parts of the heap. We recommend upgrading the Google Cloud IoT Device SDK for Embedded C used to 1.0.3 or greater.

    References: https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/blob/master/RELEASE-NOTES.md, https://github.com/GoogleCloudPlatform/iot-device-sdk-embedded-c/pull/119

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -041656933586e43cc24388a54781730df55ad567

    Affected versions

    v1.0.2
    v1.0.1
    v1.0.0

    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-2021-22547 | CVE-DB