redhat enterprise-linux CVE-2026-86561 vulnerability in Red Hat Products
Published on October 14, 2026

Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup
A flaw was found in DPDK lib/vhost. Memory size is not adequately validated before mmap during vhost memory-region setup, which can lead to a host crash or memory corruption.

NVD

Vulnerability Analysis

CVE-2026-86561 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Timeline

Reported to Red Hat.

Made public. 36 days later.

Weakness Type

Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.


Products Associated with CVE-2026-86561

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Red Hat Enterprise Linux (RHEL)
 
Red Hat Openshift
 
Red Hat Openstack
 

Affected Versions

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 Enterprise Linux 10: Red Hat Enterprise Linux 8: Red Hat Enterprise Linux 9: Red Hat OpenShift Container Platform 4: Red Hat OpenShift Container Platform 4: Red Hat OpenShift Container Platform 4: Red Hat OpenStack Platform 13 (Queens):