https://seclists.org/oss-sec/2026/q2/183: [ADVISORY] CVE-2026-5367: Heap over-ad in OVN DHCPv6 Client ID processing
Published Apr 20, 2026
·Updated
Affected Software
1 affected component
Open vSwitch OVN<24.03.8, <24.09.4, <25.03.3, <25.09.3, <26.03.1
Frequently Asked Questions
1
What is the severity of CVE-2026-5367?
CVE-2026-5367 is classified as a medium severity vulnerability due to its potential impact on data privacy.
2
How do I fix CVE-2026-5367?
To fix CVE-2026-5367, upgrade to the patched version of Open vSwitch OVN as provided by the vendor.
3
What systems are affected by CVE-2026-5367?
CVE-2026-5367 affects multiple versions of Open vSwitch OVN that handle DHCPv6 packets.
4
What type of vulnerability is CVE-2026-5367?
CVE-2026-5367 is a heap over-read vulnerability caused by incorrectly processed DHCPv6 Client ID packets.
5
Can CVE-2026-5367 lead to data leakage?
Yes, CVE-2026-5367 can lead to data leakage by exposing adjacent information stored on the heap.