CVE-2019-3840

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    CVE-2019-3840

    Published: 27 Mar 2019Last Modified: 8 Jul 2026

    Summary:

    Details: A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html, http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html, https://access.redhat.com/errata/RHSA-2019:2294, https://bugzilla.redhat.com/show_bug.cgi?id=1663051, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840, https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1fb87664214b0b105c593703e948b33ef97c61c8

    Affected versions

    v4.2.0
    v4.2.0-rc2
    v4.2.0-rc1

    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