CVE-2020-27827

lldp/openvswitch: denial of service via externally triggered memory leak

Published Mar 18, 2021 CVSS 3.1 · 7.5 High EPSS 3.2% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2571-1 openvswitch security update
Debian DLA Debian DLA DLA-3388-1 lldpd security update
Debian DLA Debian DLA DLA-3389-1 lldpd security update
Debian DSA Debian DSA DSA-4836-1 openvswitch security update
EUVD EUVD EUVD-2020-20326 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.
Ubuntu USN Ubuntu USN USN-4691-1 Open vSwitch vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:9
Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Dec 3, 2025, 6:20 PM
Reserved
Oct 27, 2020, 12:00 AM
Status
Modified
Published
Mar 18, 2021, 5:15 PM
Modified
Jun 17, 2026, 3:09 AM
Severity
Moderate
Public date
Jan 13, 2021, 12:00 AM