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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | Upgrade ovn25.09-hostUpgrade ovn25.09-vtepUpgrade ovn25.09-central-debuginfoUpgrade ovn25.09-debugsourceUpgrade ovn25.03-debugsourceUpgrade ovn25.03-centralUpgrade ovn25.09-vtep-debuginfoUpgrade ovn25.03Upgrade ovn25.03-vtepUpgrade ovn25.03-central-debuginfoUpgrade ovn25.03-host-debuginfoUpgrade ovn25.09-debuginfoUpgrade ovn25.09-centralUpgrade ovn25.03-vtep-debuginfoUpgrade ovn25.03-hostUpgrade ovn25.03-debuginfoUpgrade ovn25.09Upgrade ovn25.09-host-debuginfo | Jun 3, 2026 | Apr 13, 2026 |
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