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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.6
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- EPSS probability
- 0.87%
- CWE
- CWE-130
- Published
- 2026-04-24
- Last modified
- 2026-08-25
Affected products
- Red Hat Fast Datapath for Red Hat Enterprise Linux 8
- Red Hat Fast Datapath for Red Hat Enterprise Linux 9
- Red Hat Fast Datapath for Red Hat Enterprise Linux 9
- Red Hat Fast Datapath for Red Hat Enterprise Linux 8
- Red Hat Fast Datapath for Red Hat Enterprise Linux 9
- Red Hat Fast Datapath for Red Hat Enterprise Linux 9
- Red Hat Fast Datapath for Red Hat Enterprise Linux 9
- Red Hat Fast Datapath for Red Hat Enterprise Linux 10
Weakness type
Related vulnerabilities
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- CVE-2026-81575 — Missing Sanity Checks for Buffer Lengths
- CVE-2026-58097 — ppp(8): missing length validation in mp_SetEnddisc()
- CVE-2026-58096 — ppp(8): missing length validation in LcpDecodeConfig()
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