CVE-2026-5367
Ovn: ovn: information disclosure via crafted dhcpv6 packets
HIGH 8.6
En bref
- Source
- NVD
- EPSS
- EPSS 0.87 % · centile 59 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- redhat
- Statut NVD
- Awaiting Analysis
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.
Faiblesses (CWE)
Références
- https://access.redhat.com/errata/RHSA-2026:11694
- https://access.redhat.com/errata/RHSA-2026:11695
- https://access.redhat.com/errata/RHSA-2026:11696
- https://access.redhat.com/errata/RHSA-2026:11698
- https://access.redhat.com/errata/RHSA-2026:11700
- https://access.redhat.com/errata/RHSA-2026:11701
- https://access.redhat.com/errata/RHSA-2026:11702
- https://access.redhat.com/errata/RHSA-2026:22110
- https://access.redhat.com/errata/RHSA-2026:22111
- https://access.redhat.com/security/cve/CVE-2026-5367
- https://bugzilla.redhat.com/show_bug.cgi?id=2455863
- 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
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | redhat |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | redhat-SADP |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-25421
- GCVE · GCVE-0-2026-5367
Produits affectés
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |