Improper Handling of Length Parameter Inconsistency Affecting ovn23.09-vtep package, versions <0:23.09.6-16.el9fdp


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.87% (59th percentile)

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-RHEL9-OVN2309VTEP-16198263
  • published24 Apr 2026
  • disclosed13 Apr 2026

Introduced: 13 Apr 2026

CVE-2026-5367  (opens in a new tab)
CWE-130  (opens in a new tab)

How to fix?

Upgrade RHEL:9 ovn23.09-vtep to version 0:23.09.6-16.el9fdp or higher.
This issue was patched in RHSA-2026:11698.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ovn23.09-vtep package and not the ovn23.09-vtep package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1