Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-3840
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:33 UTC · Revision 1
Source evidence
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.
osv:CVE-2019-3840
Complete source record
{
"id": "f090daed6cbab308ac20fce8f75146064b603dd036fae021d564b4c8dbd811a4",
"url": "https://osv.dev/vulnerability/CVE-2019-3840",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-3840",
"summary": "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.",
"evidence": "osv:CVE-2019-3840",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-3840",
"aliases": [
"CVE-2019-3840"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/libvirt/libvirt",
"type": "GIT",
"events": [
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},
{
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}
],
"database_specific": {
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{
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"range": [
{
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{
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}
},
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"CVE-2013-4400-1",
"CVE-2013-4400-2",
"CVE-2013-4400-3",
"CVE-2013-4401",
"v1.1.3",
"v1.1.3-rc2",
"CVE-2013-4399",
"v1.1.3-rc1",
"CVE-2013-7336",
"CVE-2013-4296",
"CVE-2013-4311",
"v0.9.12",
"v1.1.2",
"CVE-2013-4297",
"v1.1.2-rc2",
"CVE-2013-4291",
"CVE-2013-4292",
"v1.1.2-rc1",
"CVE-2013-5651",
"v1.1.1",
"CVE-2013-4239",
"v1.1.1-rc2",
"v1.1.1-rc1",
"CVE-2013-4153",
"CVE-2013-4154",
"CVE-2013-2230",
"v1.1.0",
"CVE-2013-2218",
"v1.1.0-rc2",
"v1.1.0-rc1",
"v1.0.6",
"v1.0.6-rc2",
"v1.0.6-rc1",
"CVE-2013-1962",
"v1.0.5",
"v1.0.5-rc1",
"v1.0.4",
"v1.0.4-rc2",
"v1.0.4-rc1",
"v1.0.3",
"v1.0.3-rc2",
"v1.0.3-rc1",
"v1.0.2",
"CVE-2013-0170",
"v1.0.2-rc2",
"v1.0.2-rc1",
"v1.0.1-rc2",
"v1.0.1-rc1",
"CVE-2012-3411",
"v1.0.0-rc3",
"v1.0.0-rc2",
"v1.0.0-rc1",
"v0.10.2",
"v0.10.2-rc2",
"v0.10.2-rc1",
"CVE-2012-4423",
"v0.10.1",
"v0.10.0",
"v0.10.0-rc2",
"v0.10.0-rc1",
"v0.10.0-rc0",
"CVE-2012-3445",
"v0.9.13",
"v0.9.13-rc2",
"v0.9.13-rc1",
"v0.9.6",
"v0.9.12-rc2",
"v0.9.12-rc1",
"v0.9.11",
"v0.9.11-rc2",
"v0.9.11-rc1",
"v0.9.10",
"v0.9.10-rc2",
"v0.9.10-rc1",
"v0.9.9",
"v0.9.9-rc2",
"v0.9.9-rc1",
"v0.9.8",
"v0.9.8-rc2",
"v0.9.8-rc1",
"v0.9.7",
"v0.9.7-rc1",
"v0.9.5",
"v0.9.5-rc3",
"v0.9.5-rc2",
"v0.9.5-rc1",
"v0.9.4",
"v0.9.4-rc2",
"v0.9.4-rc1",
"v0.9.3",
"v0.9.3-rc2",
"v0.9.3-rc1",
"v0.9.2",
"CVE-2011-2178",
"v0.9.1",
"v0.9.0",
"CVE-2011-1486",
"CVE-2011-1146",
"v0.8.8",
"v0.8.7",
"v0.8.6",
"v0.8.5",
"v0.8.4",
"CVE-2010-2239",
"CVE-2010-2238",
"CVE-2010-2237",
"CVE-2010-2242",
"v0.8.2",
"v0.8.1",
"v0.8.0",
"v0.7.7",
"v0.7.6",
"v0.7.5",
"v0.7.4",
"v0.7.3",
"v0.7.2",
"v0.7.1",
"v0.7.0",
"v0.6.5",
"LIBVIRT_0_6_5",
"v0.6.4",
"LIBVIRT_0_6_4",
"v0.6.3",
"LIBVIRT_0_6_3",
"v0.6.2",
"LIBVIRT_0_6_2",
"v0.6.1",
"LIBVIRT_0_6_1",
"v0.6.0",
"LIBVIRT_0_6_0",
"CVE-2009-0036",
"CVE-2008-5086",
"v0.5.1",
"LIBVIRT_0_5_1",
"v0.5.0",
"LIBVIRT_0_5_0",
"v0.4.6",
"LIBVIRT_0_4_6",
"v0.4.4",
"LIBVIRT_0_4_4",
"v0.4.2",
"LIBVIRT_0_4_2",
"v0.4.1",
"LIBVIRT_0_4_1",
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"LIBVIRT_0_3_3",
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"LIBVIRT_0_3_2",
"v0.3.1",
"LIBVIRT_0_3_1",
"v0.3.0",
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"v0.2.3",
"LIVIRT_0_2_3",
"v0.2.2",
"LIBVIRT_0_2_2",
"v0.2.1",
"LIBVIRT_0_2_1",
"v0.2.0",
"LIBVIRT_0_2_0",
"v0.1.11",
"LIBVIRT_0_1_11",
"v0.1.10",
"LIBVIRT_0_1_10",
"v0.1.9",
"LIBVIRT_0_1_9",
"v0.1.8",
"LIBVIRT_0_1_8",
"v0.1.7",
"LIBVIRT_0_1_7",
"v0.1.6",
"LIBVIRT_0_1_6",
"v0.1.4",
"LIBVIRT_0_1_4",
"v0.1.3",
"LIBVIRT_0_1_3",
"v0.1.1",
"LIBVIRT_0_1_1",
"v0.1.0",
"LIBVIRT_0_1_0",
"v0.0.5",
"LIBVIRT_0_0_5",
"v0.0.4",
"LIBVIRT_0_0_4",
"v0.0.3",
"LIBVIRT_0_0_3",
"v0.0.2",
"LIBVIR_0_0_2",
"v0.0.1",
"LIBVIR_0_0_1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-3840.json"
}
}
],
"modified": "2026-10-24T10:30:54.916953214Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/",
"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"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*",
"cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "15.0"
},
{
"last_affected": "15.0"
},
{
"introduced": "42.3"
},
{
"last_affected": "42.3"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-3840",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438306,
"published_at": "2019-03-27T13:29:01.68+00:00"
}