CVE-2026-5367Ovn: ovn: information disclosure via crafted dhcpv6 packets
Updated under an hour ago ()
Does this affect you?
It affects Red Hat Fast Datapath for Red Hat Enterprise Linux 10 and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Weakness (CWE)
- CWE-130
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Fast Datapath for Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:25.03.2-100.el10fdp not affected | CNA record |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CNA record |
Red Hat Fast Datapath for Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:25.03.2-100.el10fdp not affected | CISA ADP |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CISA ADP |
References
- https://access.redhat.com/errata/RHSA-2026:11694vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:11695vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:11696vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:11698vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:11700vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:11701vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:11702vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:22110vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:22111vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-5367vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2455863issue-tracking, x-refsource-redhat
- http://www.openwall.com/lists/oss-security/2026/04/20/3
- http://www.openwall.com/lists/oss-security/2026/04/20/5
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5367.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.