CVE Feed

    Dashboard / CVE / CVE-2026-86566

    CVE-2026-86566

    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.

    Published:Oct 14, 2026
    Last Modified:Oct 24, 2026
    EPS:Oct 14, 2026
    EPSS Score:0.0013
    CVSS Score:6.5

    Affected Products

    Vendor
    Dpdk
    Product
    Dpdk
    Vendor
    Red Hat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Redhat
    Product
    Openshift Container Platform
    Vendor
    Redhat
    Product
    Openstack

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-100236 (CVSS 8.6) — A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not…
    CVE-2026-86846 (CVSS 6.5) — A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is use…
    CVE-2026-86567 (CVSS 8.8) — A flaw was found in DPDK lib/vhost. The VDUSE handler fails to invalidate vring pointers when the IOTLB is inv…
    CVE-2026-86565 (CVSS 8.2) — A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table si…
    CVE-2026-86563 (CVSS 7.8) — A flaw was found in DPDK lib/vhost. A double-offset bug in vhost log mapping calculation can lead to incorrect…
    CVE-2026-86561 (CVSS 6.5) — A flaw was found in DPDK lib/vhost. Memory size is not adequately validated before mmap during vhost memory-re…
    CVE-2015-1142857 (CVSS 8.6) — On multiple SR-IOV cars it is possible for VF's assigned to guests to send ethernet flow control pause frames …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High