UBUNTU-CVE-2026-84965

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    UBUNTU-CVE-2026-84965

    Published: 3 Sept 2026Last Modified: 24 Sept 2026
    Upstream:
    CVE-2026-84965

    Summary:

    Details: An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a sufficiently large JSON input to an application that links the library may cause that application to terminate unexpectedly, resulting in denial of service.

    References: https://ubuntu.com/security/CVE-2026-84965, https://www.cve.org/CVERecord?id=CVE-2026-84965, https://jira.mongodb.org/browse/CDRIVER-6405

    Affected packages

    Package

    Name: mongo-c-driver

    Purl: pkg:deb/ubuntu/mongo-c-driver?arch=source&distro=esm-apps%2Ffocal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.15.0-1
    1.15.1-1
    1.15.2-1

    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-2026-84965 | CVE-DB