HighFix available
lldpd, openvswitch — security advisory
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
- Products
- lldpd, openvswitch
- Affected versions
- 0.7.16-1, 0.7.19-1, 0.9.8-1, 0.9.9-1, 0.9.9-1ubuntu0.1, 1.0.11-1, 1.0.12-1, 1.0.13-1, 1.0.17-1, 1.0.18-1, 1.0.18-1build1, 1.0.18-1build3, 1.0.18-1build4, 1.0.18-1ubuntu0.1, 1.0.19-1, 1.0.19-1ubuntu0.1, 1.0.22-1, 1.0.22-1build1, 1.0.4-1, 1.0.4-1build1, 1.0.4-1build2, 2.12.0-0ubuntu1, 2.12.0-0ubuntu2, 2.12.1~git20191107.7accd1302-0ubuntu1, 2.12.90~git20200107.af683565b-0ubuntu1, 2.12.90~git20200107.af683565b-0ubuntu2, 2.12.90~git20200107.af683565b-0ubuntu3, 2.13.0-0ubuntu1, 2.13.0~git20200127.dbdf66c29-0ubuntu2, 2.13.0~git20200212.15ae9db33-0ubuntu1, 2.13.0~git20200212.15ae9db33-0ubuntu2, 2.13.1-0ubuntu0.20.04.1, 2.4.0-0ubuntu4, 2.4.0-0ubuntu5, 2.5.0-0ubuntu1, 2.5.0~git20160129.46a88d9-0ubuntu1, 2.5.0~git20160219.522aca6-0ubuntu1, 2.5.0~git20160219.522aca6-0ubuntu2, 2.5.0~git20160219.522aca6-0ubuntu3, 2.5.2-0ubuntu0.16.04.1, 2.5.2-0ubuntu0.16.04.2, 2.5.2-0ubuntu0.16.04.3, 2.5.4-0ubuntu0.16.04.1, 2.5.5-0ubuntu0.16.04.1, 2.5.5-0ubuntu0.16.04.2, 2.8.0-0ubuntu2, 2.8.1-0ubuntu2, 2.8.1-0ubuntu3, 2.9.0-0ubuntu1, 2.9.0~git20180205.5a39582ca-0ubuntu1, 2.9.2-0ubuntu0.18.04.2, 2.9.2-0ubuntu0.18.04.3, 2.9.5-0ubuntu0.18.04.1
- Fixed versions
- 2.13.1-0ubuntu0.20.04.3, 2.5.9-0ubuntu0.16.04.2, 2.9.7-0ubuntu0.18.04.2
- CVEs
- CVE-2020-27827
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:48 UTC · Revision 1
Source evidence
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
osv:UBUNTU-CVE-2020-27827
openvswitch
Fixed versions: 2.5.9-0ubuntu0.16.04.2
lldpd
Fixed versions: Not specified
openvswitch
Fixed versions: 2.9.7-0ubuntu0.18.04.2
lldpd
Fixed versions: Not specified
openvswitch
Fixed versions: 2.13.1-0ubuntu0.20.04.3
lldpd
Fixed versions: Not specified
lldpd
Fixed versions: Not specified
lldpd
Fixed versions: Not specified
lldpd
Fixed versions: Not specified
lldpd
Fixed versions: Not specified
lldpd
Fixed versions: Not specified
Complete source record
{
"id": "b9a14b0b07b9cb30b182a508e6d7c813b9f9180f5cb26a238fbdffbc861dd1cf",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-27827",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-27827",
"summary": "A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.",
"evidence": "osv:UBUNTU-CVE-2020-27827",
"products": [
{
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},
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"fixed_versions": [
{
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}
],
"affected_versions": [
{
"value": "2.4.0-0ubuntu4",
"evidence": "/affected/0/versions"
},
{
"value": "2.4.0-0ubuntu5",
"evidence": "/affected/0/versions"
},
{
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"evidence": "/affected/0/versions"
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{
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{
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{
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{
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{
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{
"value": "2.5.2-0ubuntu0.16.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.2-0ubuntu0.16.04.3",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.4-0ubuntu0.16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.5-0ubuntu0.16.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "2.5.5-0ubuntu0.16.04.2",
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},
{
"name": {
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},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.7.16-1",
"evidence": "/affected/1/versions"
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{
"value": "0.7.19-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "openvswitch",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.9.7-0ubuntu0.18.04.2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "2.8.0-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.8.1-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.8.1-0ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.0~git20180205.5a39582ca-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.0-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.2-0ubuntu0.18.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.2-0ubuntu0.18.04.3",
"evidence": "/affected/2/versions"
},
{
"value": "2.9.5-0ubuntu0.18.04.1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.9.8-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.9.9-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.9.9-1ubuntu0.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "openvswitch",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.13.1-0ubuntu0.20.04.3",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "2.12.0-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.12.0-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "2.12.1~git20191107.7accd1302-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.12.90~git20200107.af683565b-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.12.90~git20200107.af683565b-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "2.12.90~git20200107.af683565b-0ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "2.13.0~git20200127.dbdf66c29-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "2.13.0~git20200212.15ae9db33-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.13.0~git20200212.15ae9db33-0ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "2.13.0-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "2.13.1-0ubuntu0.20.04.1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.4-1",
"evidence": "/affected/5/versions"
},
{
"value": "1.0.4-1build1",
"evidence": "/affected/5/versions"
},
{
"value": "1.0.4-1build2",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.11-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.0.12-1",
"evidence": "/affected/6/versions"
},
{
"value": "1.0.13-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.17-1",
"evidence": "/affected/7/versions"
},
{
"value": "1.0.18-1",
"evidence": "/affected/7/versions"
},
{
"value": "1.0.18-1build1",
"evidence": "/affected/7/versions"
},
{
"value": "1.0.18-1build3",
"evidence": "/affected/7/versions"
},
{
"value": "1.0.18-1ubuntu0.1",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.18-1build3",
"evidence": "/affected/8/versions"
},
{
"value": "1.0.18-1build4",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.19-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.0.22-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.0.22-1build1",
"evidence": "/affected/9/versions"
}
]
},
{
"name": {
"value": "lldpd",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.0.18-1build4",
"evidence": "/affected/10/versions"
},
{
"value": "1.0.19-1",
"evidence": "/affected/10/versions"
},
{
"value": "1.0.19-1ubuntu0.1",
"evidence": "/affected/10/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2020-27827",
"aliases": [
"UBUNTU-CVE-2020-27827"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.9-0ubuntu0.16.04.2"
}
]
}
],
"package": {
"name": "openvswitch",
"purl": "pkg:deb/ubuntu/openvswitch?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"2.4.0-0ubuntu4",
"2.4.0-0ubuntu5",
"2.5.0~git20160129.46a88d9-0ubuntu1",
"2.5.0~git20160219.522aca6-0ubuntu1",
"2.5.0~git20160219.522aca6-0ubuntu2",
"2.5.0~git20160219.522aca6-0ubuntu3",
"2.5.0-0ubuntu1",
"2.5.2-0ubuntu0.16.04.1",
"2.5.2-0ubuntu0.16.04.2",
"2.5.2-0ubuntu0.16.04.3",
"2.5.4-0ubuntu0.16.04.1",
"2.5.5-0ubuntu0.16.04.1",
"2.5.5-0ubuntu0.16.04.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27827.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openvswitch-common",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-ipsec",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-pki",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-switch",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-switch-dpdk",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-test",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-testcontroller",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "openvswitch-vtep",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "ovn-central",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "ovn-common",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "ovn-docker",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "ovn-host",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
},
{
"binary_name": "python-openvswitch",
"binary_version": "2.5.9-0ubuntu0.16.04.2"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lldpd",
"purl": "pkg:deb/ubuntu/lldpd?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.7.16-1",
"0.7.19-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27827.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lldpd",
"binary_version": "0.7.19-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.7-0ubuntu0.18.04.2"
}
]
}
],
"package": {
"name": "openvswitch",
"purl": "pkg:deb/ubuntu/openvswitch?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"2.8.0-0ubuntu2",
"2.8.1-0ubuntu2",
"2.8.1-0ubuntu3",
"2.9.0~git20180205.5a39582ca-0ubuntu1",
"2.9.0-0ubuntu1",
"2.9.2-0ubuntu0.18.04.2",
"2.9.2-0ubuntu0.18.04.3",
"2.9.5-0ubuntu0.18.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27827.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openvswitch-common",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "openvswitch-pki",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "openvswitch-switch",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "openvswitch-switch-dpdk",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "openvswitch-test",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "openvswitch-testcontroller",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "openvswitch-vtep",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "ovn-central",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "ovn-common",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "ovn-controller-vtep",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "ovn-docker",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "ovn-host",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "python-openvswitch",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
},
{
"binary_name": "python3-openvswitch",
"binary_version": "2.9.7-0ubuntu0.18.04.2"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lldpd",
"purl": "pkg:deb/ubuntu/lldpd?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.9.8-1",
"0.9.9-1",
"0.9.9-1ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27827.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lldpd",
"binary_version": "0.9.9-1ubuntu0.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.13.1-0ubuntu0.20.04.3"
}
]
}
],
"package": {
"name": "openvswitch",
"purl": "pkg:deb/ubuntu/openvswitch?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"2.12.0-0ubuntu1",
"2.12.0-0ubuntu2",
"2.12.1~git20191107.7accd1302-0ubuntu1",
"2.12.90~git20200107.af683565b-0ubuntu1",
"2.12.90~git20200107.af683565b-0ubuntu2",
"2.12.90~git20200107.af683565b-0ubuntu3",
"2.13.0~git20200127.dbdf66c29-0ubuntu2",
"2.13.0~git20200212.15ae9db33-0ubuntu1",
"2.13.0~git20200212.15ae9db33-0ubuntu2",
"2.13.0-0ubuntu1",
"2.13.1-0ubuntu0.20.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27827.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openvswitch-common",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-pki",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-source",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-switch",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-switch-dpdk",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-test",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-testcontroller",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "openvswitch-vtep",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
},
{
"binary_name": "python3-openvswitch",
"binary_version": "2.13.1-0ubuntu0.20.04.3"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "lldpd",
"purl": "pkg:deb/ubuntu/lldpd?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"1.0.4-1",
"1.0.4-1build1",
"1.0.4-1build2"
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],
"modified": "2026-10-21T10:15:35.199914808Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2020-27827",
"https://mail.openvswitch.org/pipermail/ovs-announce/2021-January/000269.html",
"https://ubuntu.com/security/notices/USN-4691-1",
"https://www.cve.org/CVERecord?id=CVE-2020-27827"
]
},
"related_cves": [
{
"value": "CVE-2020-27827",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 392095,
"published_at": "2021-01-13T00:00:00+00:00"
}