https://seclists.org/oss-sec/2026/q2/185: [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 has a high severity rating due to its potential for information leakage through out-of-bounds reads.
2
How do I fix CVE-2026-5367?
To fix CVE-2026-5367, update to the latest version of Open vSwitch OVN where the vulnerability has been patched.
3
What systems are affected by CVE-2026-5367?
CVE-2026-5367 affects multiple versions of the Open vSwitch OVN software that process DHCPv6 packets.
4
What type of vulnerability is CVE-2026-5367?
CVE-2026-5367 is classified as a heap over-read vulnerability within the DHCPv6 Client ID processing.
5
What could an attacker achieve by exploiting CVE-2026-5367?
An attacker could exploit CVE-2026-5367 to read sensitive information from adjacent memory areas, leading to potential data exposure.