{
  "cveId": "CVE-2019-3840",
  "url": "https://patchblox.com/security/cve/CVE-2019-3840",
  "summary": "CVE-2019-3840 is fixed in 12 products on 1 platform, first by libnss-libvirt 4.0.0-1ubuntu8.8, released February 26, 2019. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libnss-libvirt: A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface informati...",
  "description": "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.",
  "published": "2019-02-26T16:00:00Z",
  "severity": "Medium",
  "epss": 0.01482,
  "epssPercentile": 0.74121,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libnss-libvirt",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libnss-libvirt 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libnss-libvirt-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-bin",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-bin 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-bin-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-clients",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-clients 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-clients-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-daemon",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-daemon 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-daemon-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-daemon-driver-storage-gluster",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-daemon-driver-storage-gluster 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-daemon-driver-storage-gluster-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-daemon-driver-storage-rbd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-daemon-driver-storage-rbd 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-daemon-driver-storage-rbd-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-daemon-driver-storage-sheepdog",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-daemon-driver-storage-sheepdog 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-daemon-driver-storage-sheepdog-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-daemon-driver-storage-zfs",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-daemon-driver-storage-zfs 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-daemon-driver-storage-zfs-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-daemon-system",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-daemon-system 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-daemon-system-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-sanlock",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-sanlock 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-sanlock-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt-wireshark",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt-wireshark 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt-wireshark-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libvirt0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "4.0.0-1ubuntu8.8",
      "fix": "libvirt0 4.0.0-1ubuntu8.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libvirt0-4.0.0-1ubuntu8.8",
      "released": "2019-02-26T16:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}