CVE-2026-86566

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.

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Produits concernés

• Red Hat Fast Datapath for RHEL 10
• Red Hat Fast Datapath for RHEL 8
• 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 OpenStack Platform 13 (Queens)

Scores CVSS

Faiblesses (CWE)

• CWE-191

Références

• https://access.redhat.com/security/cve/CVE-2026-86566
• https://bugzilla.redhat.com/show_bug.cgi?id=2529684

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories