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VULNERABILITIES

CVE-2026-86566 Details

Description

A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:94629 [email protected]
https://access.redhat.com/errata/RHSA-2026:94630 [email protected]
https://access.redhat.com/security/cve/CVE-2026-86566 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2529684 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-191Integer Underflow (Wrap or Wraparound)[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-86566
NVD Published Date:
Oct 14, 2026
NVD Last Modified:
Nov 6, 2026
Source:
[email protected]
CVE-2026-86566 Details - Not Deferred