Vulnerability details
CVE-2026-5367
Red Hat Fast Datapath for RHEL 8Red Hat Fast Datapath for RHEL 9Red Hat OpenShift Container Platform 4
Ovn: ovn: information disclosure via crafted dhcpv6 packets
CVSS 3.1
8.6High
Official description
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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
| 8.6High | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Red Hat | Fast Datapath for RHEL 8 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Fast Datapath for RHEL 8 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Fast Datapath for RHEL 9 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Fast Datapath for RHEL 9 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Fast Datapath for RHEL 9 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Fast Datapath for RHEL 9 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat OpenShift Container Platform 4 | All | CVEProject cvelistV5 (CNA) |
References and advisories
14- http://www.openwall.com/lists/oss-security/2026/04/20/3
- http://www.openwall.com/lists/oss-security/2026/04/20/5
- https://access.redhat.com/security/cve/CVE-2026-5367 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2455863 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5367.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:22110 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:22111 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11694 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11695 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11696 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11698 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11700 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11701 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:11702 vendor-advisoryx_refsource_REDHAT
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Details
- Published
- 2026-04-24
- Last updated
- 2026-08-25
- State
- Published
- Assigner (CNA)
- redhat
Exploit prediction (EPSS)
0.86%
Probability of exploitation in 30 days
58.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-130Improper Handling of Length Parameter Inconsistency