Improper Handling of Length Parameter Inconsistency Affecting ovn-org/ovn package, versions [,26.03.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-OVNORGOVN-16304784
- published27 Apr 2026
- disclosed13 Apr 2026
- creditUnknown
Introduced: 13 Apr 2026
CVE-2026-5367 (opens in a new tab)How to fix?
Upgrade ovn-org/ovn to version 26.03.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Handling of Length Parameter Inconsistency via the ovn-controller process when processing specially crafted DHCPv6 SOLICIT packets containing an inflated Client ID length. An attacker can access sensitive heap memory contents by sending these packets from a virtual machine port. This is only exploitable if DHCPv6 is enabled for logical switch ports.
Workaround
This vulnerability can be mitigated by disabling the DHCPv6 feature for workloads attached to logical ports, for example by running: ovn-nbctl clear logical_switch_port dhcpv6_options.