ovn25.03: A flaw was found in OVN (Open Virtual Network)
CVE-2026-5367 is fixed in 3 products on 1 platform, first by RHSA-2026:22110, released April 13, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openvswitch · opensuse-leap 16.0 | 3.5.4-160000.4.1 | OPENSUSE-SU-2026:20972-1 | Jun 17, 2026 |
| openvswitch · sles 15.6 | 3.1.7-150600.33.15.1 | SUSE-SU-2026:2475-1 | Jun 22, 2026 |
| openvswitch · sles 15.7 | 3.5.4-150700.41.18.1 | SUSE-SU-2026:2463-1 | Jun 19, 2026 |
| openvswitch · sles 16.0 | 3.5.4-160000.4.1 | SUSE-SU-2026:22152-1 | Jun 17, 2026 |
| ovn25.03 · RHEL 10 | 25.03.2-100.el10fdp | RHSA-2026:22110 | Apr 13, 2026 |
| ovn25.09 · RHEL 10 | 25.09.2-103.el10fdp | RHSA-2026:22111 | Apr 13, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.