redhat enterprise-linux CVE-2026-86845 vulnerability in Red Hat Products
Published on October 14, 2026

Dpdk: dpdk: guest-triggered use-after-free and type confusion in vhost-crypto session cleanup
A flaw was found in DPDK lib/vhost vhost-crypto. Session cleanup can leave a stale cached session pointer, and the data path does not check the session type before attaching it, leading to use-after-free or type confusion in the host vhost-crypto backend.

NVD

Vulnerability Analysis

CVE-2026-86845 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

What is a Dangling pointer Vulnerability?

The program dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid. When a program releases memory, but it maintains a pointer to that memory, then the memory might be re-allocated at a later time. If the original pointer is accessed to read or write data, then this could cause the program to read or modify data that is in use by a different function or process. Depending on how the newly-allocated memory is used, this could lead to a denial of service, information exposure, or code execution.

CVE-2026-86845 has been classified to as a Dangling pointer vulnerability or weakness.


Products Associated with CVE-2026-86845

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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):