{"id":"CVE-2026-86565","title":"A flaw was found in DPDK lib/vhost","summary":"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":8.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"Red Hat","product":"grout","affected":["grout (all versions)","openvswitch3.5 (all versions)","openvswitch3.6 (all versions)","openvswitch2.11 (all versions)","openvswitch2.12 (all versions)","openvswitch2.13 (all versions)","openvswitch2.15 (all versions)","openvswitch2.16 (all versions)","openvswitch2.17 (all versions)","openvswitch3.1 (all versions)","grout (all versions)","openvswitch2.17 (all versions)","openvswitch3.0 (all versions)","openvswitch3.1 (all versions)","openvswitch3.2 (all versions)","openvswitch3.3 (all versions)","openvswitch3.4 (all versions)","openvswitch3.5 (all versions)","openvswitch3.6 (all versions)","dpdk (all versions)","dpdk (all versions)","dpdk (all versions)","openvswitch2.17 (all versions)","openvswitch3.0 (all versions)","openvswitch3.1 (all versions)","openvswitch (all versions)"],"published":"2026-10-14","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:18:21.997","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86565","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-86565","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529683","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86565.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86565"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86565"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T13:53:24.414124Z"},"ingestedAt":"2026-10-14T17:44:53.679Z","epss":0.00167,"epssPercentile":0.05934,"slug":"CVE-2026-86565","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Fast Datapath for RHEL 10, Fast Datapath for RHEL 8, Fast Datapath for RHEL 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · no fix planned: Fast Datapath for RHEL 10, Fast Datapath for RHEL 8, Fast Datapath for RHEL 9, Red Hat Enterprise Linux 10, … · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86565.json)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}