{"id":"CVE-2026-86846","title":"A flaw was found in DPDK lib/vhost vhost-crypto","summary":"A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.","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":"2026-10-15T16:18:22.450","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86846","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-86846","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529846","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86846.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86846"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86846"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T13:52:10.592272Z"},"ingestedAt":"2026-10-14T18:47:39.318Z","epss":0.0018,"epssPercentile":0.07505,"slug":"CVE-2026-86846","body":"## Overview\n\nA flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.\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-2026-86846.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}