Vulnerability in Red Hat Fast Datapath For Enterprise Linux 10
CVE-2026-5367
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Red Hat Fast Datapath For Enterprise Linux 10 — versions 0:25.09.2-103.el10fdp, 0:25.03.2-100.el10fdp
- Red Hat Fast Datapath For Enterprise Linux 8 — versions 0:21.12.0-145.el8fdp, 0:23.06.4-30.el8fdp
- Red Hat Fast Datapath For Enterprise Linux 9 — versions 0:23.06.4-30.el9fdp, 0:23.09.6-16.el9fdp, 0:24.03.7-82.el9fdp
- Red Hat Fast Datapath For Rhel 10
- Red Hat Fast Datapath For Rhel 8
- Red Hat Fast Datapath For Rhel 9
- Red Hat Openshift Container Platform 4
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:11694 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:11695 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:11696 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:11698 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:11700 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:11701 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:11702 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2026-5367 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-5367?
- CVE-2026-5367 is a high-severity vulnerability in Red Hat Fast Datapath For Enterprise Linux 10, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 8.6/10. Published 2026-04-24.
- How severe is CVE-2026-5367?
- High severity. CVSS v3 base score is 8.6 out of 10.