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CVE-2026-86563: Incorrect Calculation of Buffer Size in Red Hat Fast Datapath for RHEL 10

0
High
VulnerabilityCVE-2026-86563cvecve-2026-86563
Published: 10/14/2026 (10/14/2026, 16:08:04 UTC)
Source: CVE Database V5
Vendor/Project: Red Hat
Product: Fast Datapath for RHEL 10

Description

A flaw was found in DPDK lib/vhost. A double-offset bug in vhost log mapping calculation can lead to incorrect memory access.

CVSS v3.1

Score 7.8high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

Red Hat

Fast Datapath for RHEL 10

Red Hat

Fast Datapath for RHEL 10

Red Hat

Fast Datapath for RHEL 10

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 8

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Fast Datapath for RHEL 9

Red Hat

Red Hat Enterprise Linux 10

Red Hat

Red Hat Enterprise Linux 8

Red Hat

Red Hat Enterprise Linux 9

Red Hat

Red Hat OpenShift Container Platform 4

Red Hat

Red Hat OpenShift Container Platform 4

Red Hat

Red Hat OpenShift Container Platform 4

Red Hat

Red Hat OpenStack Platform 13 (Queens)

Technical Details

Data Version
5.2
Assigner Short Name
redhat
Date Reserved
2026-09-08T02:56:25.265Z
Cvss Version
3.1
State
PUBLISHED
Vendor Advisory Urls
[{"url":"https://access.redhat.com/security/cve/CVE-2026-86563","vendor":"Red Hat"}]

Threat ID: 6acfaf362cdf04f65694d3b7

Added to database: 10/14/2026, 16:35:02 UTC

Last updated: 10/14/2026, 16:35:02 UTC

Views: 1

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