CVE-2026-5367
Fixed in a distro release EPSS <1%CVSS 8.6
A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.
Products: Fast Datapath for Red Hat Enterprise Linux 10, Fast Datapath for Red Hat Enterprise Linux 8, Fast Datapath for Red Hat Enterprise Linux 9, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 9, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | ovn | no fix |
| Debian 13 | ovn | no fix |
| Red Hat Enterprise Linux 10 | ovn25.03 | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-central | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-central-debuginfo | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-debuginfo | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-debugsource | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-host | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-host-debuginfo | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-vtep | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.03-vtep-debuginfo | 0:25.03.2-100.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09 | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-central | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-central-debuginfo | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-debuginfo | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-debugsource | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-host | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-host-debuginfo | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-vtep | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 10 | ovn25.09-vtep-debuginfo | 0:25.09.2-103.el10fdp |
| Red Hat Enterprise Linux 8 | ovn-2021 | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-central | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-central-debuginfo | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-debuginfo | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-debugsource | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-host | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-host-debuginfo | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-vtep | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn-2021-vtep-debuginfo | 0:21.12.0-145.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06 | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-central | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-central-debuginfo | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-debuginfo | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-debugsource | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-host | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-host-debuginfo | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-vtep | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 8 | ovn23.06-vtep-debuginfo | 0:23.06.4-30.el8fdp |
| Red Hat Enterprise Linux 9 | ovn23.06 | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-central | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-central-debuginfo | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-debuginfo | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-debugsource | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-host | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-host-debuginfo | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-vtep | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.06-vtep-debuginfo | 0:23.06.4-30.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09 | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-central | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-central-debuginfo | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-debuginfo | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-debugsource | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-host | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-host-debuginfo | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-vtep | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn23.09-vtep-debuginfo | 0:23.09.6-16.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03 | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-central | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-central-debuginfo | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-debuginfo | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-debugsource | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-host | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-host-debuginfo | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-vtep | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn24.03-vtep-debuginfo | 0:24.03.7-82.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03 | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-central | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-central-debuginfo | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-debuginfo | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-debugsource | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-host | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-host-debuginfo | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-vtep | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.03-vtep-debuginfo | 0:25.03.2-100.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09 | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-central | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-central-debuginfo | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-debuginfo | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-debugsource | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-host | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-host-debuginfo | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-vtep | 0:25.09.2-103.el9fdp |
| Red Hat Enterprise Linux 9 | ovn25.09-vtep-debuginfo | 0:25.09.2-103.el9fdp |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | openvswitch | 2.14.2-150400.24.35.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | openvswitch | 2.14.2-150400.24.35.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | openvswitch3 | 3.1.7-150500.3.31.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | openvswitch3 | 3.1.7-150500.3.31.1 |
| SUSE Linux Enterprise Micro 5.5 | openvswitch3 | 3.1.7-150500.3.31.1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | openvswitch | 3.5.4-150700.41.18.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | openvswitch | 3.5.4-150700.41.18.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | openvswitch | 2.14.2-150400.24.35.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openvswitch | 2.14.2-150400.24.35.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openvswitch3 | 3.1.7-150500.3.31.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | openvswitch | 3.1.7-150600.33.15.1 |
| SUSE Linux Enterprise Server 16.0 | openvswitch | 3.5.4-160000.4.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | openvswitch | 2.14.2-150400.24.35.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | openvswitch | 2.14.2-150400.24.35.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | openvswitch3 | 3.1.7-150500.3.31.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | openvswitch | 3.1.7-150600.33.15.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | openvswitch | 3.5.4-160000.4.1 |
| SUSE Linux Micro 6.0 | openvswitch | 3.1.7-6.1 |
| SUSE Linux Micro 6.1 | openvswitch | 3.1.7-slfo.1.1_4.1 |
| SUSE Linux Micro 6.2 | openvswitch | 3.5.4-160000.4.1 |
| Ubuntu 20.04 LTS | ovn | no fix |
| Ubuntu 22.04 LTS | ovn | no fix |
| Ubuntu 24.04 LTS | ovn | no fix |
| Ubuntu 25.10 | ovn | no fix |
| Ubuntu 26.04 LTS | ovn | no fix |
| Ubuntu 26.10 | ovn | no fix |
| openSUSE Leap 16.0 | openvswitch | 3.5.4-160000.4.1 |
| openSUSE Tumbleweed | openvswitch | 3.7.1-34.1 |