CVE-2026-86565

Full vulnerability record from the local CVENow database.
Description

A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.
Severity
HIGH
CVSS score
8.2 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
[email protected]
Published
2026-10-14 17:20:05.770000
Last modified
2026-11-02 07:18:05.090000
View original CVE JSON
{
  "id": "CVE-2026-86565",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-14T17:20:05.770",
  "lastModified": "2026-11-02T07:18:05.090",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 10",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "grout",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 10",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.5",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 10",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.6",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.11",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.12",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.13",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.15",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.16",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.17",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.1",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "grout",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.17",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.0",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.1",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.2",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.3",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.4",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.5",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Fast Datapath for RHEL 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.6",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::fastdatapath"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 10",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "dpdk",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "dpdk",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "dpdk",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "defaultStatus": "unaffected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch2.17",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.0",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch3.1",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ]
        },
        {
          "vendor": "Red Hat",
          "product": "Red Hat OpenStack Platform 13 (Queens)",
          "defaultStatus": "affected",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "packageName": "openvswitch",
          "cpes": [
            "cpe:/a:redhat:openstack:13"
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-15T13:53:24.414124Z",
          "id": "CVE-2026-86565",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-86565",
      "source": "[email protected]"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2529683",
      "source": "[email protected]"
    }
  ]
}