CVE-2024-2182: Ovn: insufficient validation of bfd packets may lead to denial of service

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-03-12 · updated 2026-10-19
Weakness: CWE-346

Description

A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.

Affected products

Red Hat Fast Datapath for Red Hat Enterprise Linux 8: all versions — fixed in 0:21.12.0-142.el8fdp, 0:22.03.3-71.el8fdp, 0:22.12.1-94.el8fdp, 0:23.03.1-100.el8fdp, 0:23.06.1-112.el8fdp
Red Hat Fast Datapath for Red Hat Enterprise Linux 9: all versions — fixed in 0:22.03.3-71.el9fdp, 0:22.12.1-94.el9fdp, 0:23.03.1-100.el9fdp, 0:23.06.1-112.el9fdp, 0:23.09.0-136.el9fdp
Red Hat Fast Datapath for RHEL 10: all versions
Red Hat Fast Datapath for RHEL 9: all versions
Red Hat OpenShift Container Platform 4.18: all versions

How to fix

Upgrade to a fixed version: Red Hat Fast Datapath for Red Hat Enterprise Linux 8 0:21.12.0-142.el8fdp, 0:22.03.3-71.el8fdp, 0:22.12.1-94.el8fdp, 0:23.03.1-100.el8fdp; Red Hat Fast Datapath for Red Hat Enterprise Linux 9 0:22.03.3-71.el9fdp, 0:22.12.1-94.el9fdp, 0:23.03.1-100.el9fdp, 0:23.06.1-112.el9fdp. Check the vendor advisory for mitigations.

References

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