{"id":"CVE-2026-86856","title":"A flaw was found in the DPDK nfp vDPA driver","summary":"A flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for a single queue pair can be overflowed when more virtqueues are configured, leading to a host crash or memory corruption.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/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":"2026-10-15T15:17:38.337","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86856","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-86856","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529897","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86856.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86856"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86856"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T14:45:11.104538Z"},"ingestedAt":"2026-10-14T18:47:39.319Z","epss":0.00165,"epssPercentile":0.05637,"slug":"CVE-2026-86856","body":"## Overview\n\nA flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for a single queue pair can be overflowed when more virtqueues are configured, leading to a host crash or memory corruption.\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** · Moderate · 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 OpenShift Container Platform 4, … · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86856.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}