CVE-2026-5367
8.6 HIGHA flaw was found in OVN (Open Virtual Network)
Published: 2026-04-24 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 8.6 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- CWE
- CWE-130
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-5367
- [Other]https://access.redhat.com/errata/RHSA-2026:11694
- [Other]https://access.redhat.com/errata/RHSA-2026:11695
- [Other]https://access.redhat.com/errata/RHSA-2026:11696
- [Other]https://access.redhat.com/errata/RHSA-2026:11698
- [Other]https://access.redhat.com/errata/RHSA-2026:11700
- [Other]https://access.redhat.com/errata/RHSA-2026:11701
- [Other]https://access.redhat.com/errata/RHSA-2026:11702
- [Other]https://access.redhat.com/errata/RHSA-2026:22110
- [Other]https://access.redhat.com/errata/RHSA-2026:22111
- [Other]https://access.redhat.com/security/cve/CVE-2026-5367
- [Other]https://bugzilla.redhat.com/show_bug.cgi?id=2455863
- [Other]http://www.openwall.com/lists/oss-security/2026/04/20/3
- [Other]http://www.openwall.com/lists/oss-security/2026/04/20/5
Related CVEs
Same CWE
- CVE-2026-45681 — OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard (5.9 MEDIUM)
- CVE-2026-45615 — mouse07410/asn1c is an ASN.1 compiler (8.2 HIGH)
- CVE-2026-48685 — FastNetMon Community Edition through 1.2.9 has out-of-bounds memory access because it incorrectly parses BGP path attributes with the ext... (6.5 MEDIUM)
- CVE-2026-33846 — A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS (7.5 HIGH)
- CVE-2026-31635 — In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix oversized RESPONSE authenticator length check rxgk_verif... (7.5 HIGH)