UBUNTU-CVE-2021-3607

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    UBUNTU-CVE-2021-3607

    Published: 18 Jun 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-3607
    Aliases:
    USN-5010-1

    Summary:

    Details: An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

    References: https://ubuntu.com/security/CVE-2021-3607, https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg07925.html, https://ubuntu.com/security/notices/USN-5010-1, https://www.cve.org/CVERecord?id=CVE-2021-3607

    Affected packages

    Package

    Name: qemu

    Purl: pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.17?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:4.2-3ubuntu6.17

    Affected versions

    1:4.0+dfsg-0ubuntu9

    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-2021-3607 | CVE-DB