UBUNTU-CVE-2021-22945

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-22945

    UBUNTU-CVE-2021-22945

    Published: 15 Sept 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-22945
    Aliases:
    USN-5079-1

    Summary:

    Details: When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.

    References: https://ubuntu.com/security/CVE-2021-22945, https://curl.se/docs/CVE-2021-22945.html, https://ubuntu.com/security/notices/USN-5079-1, https://www.cve.org/CVERecord?id=CVE-2021-22945

    Affected packages

    Package

    Name: curl

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=jammy

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.74.0-1.3ubuntu2

    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
    UBUNTU-CVE-2021-22945 | CVE-DB