CVE-2026-86561

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Memory size is not adequately validated before mmap during vhost memory-region setup, which can lead to a host crash or memory corruption."], "mitigation": {"lang": "en:us", "value": "No mitigation is currently available."}, "name": "CVE-2026-86561", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10::fastdatapath", "fix_state": "Fix deferred", "package_name": "grout", "product_name": "Fast Datapath for RHEL 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.5", "product_name": "Fast Datapath for RHEL 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.6", "product_name": "Fast Datapath for RHEL 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.11", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.12", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.13", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.15", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.16", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.17", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.1", "product_name": "Fast Datapath for RHEL 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "grout", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch2.17", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.0", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.1", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.2", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.3", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.4", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.5", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9::fastdatapath", "fix_state": "Fix deferred", "package_name": "openvswitch3.6", "product_name": "Fast Datapath for RHEL 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "dpdk", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "dpdk", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "dpdk", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openvswitch2.17", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openvswitch3.0", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openvswitch3.1", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Fix deferred", "package_name": "openvswitch", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}], "public_date": "2026-10-14T15:00:10Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-86561\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-86561"], "statement": "A malicious guest that can control vhost-user memory table messages can trigger this flaw. Red Hat has rated this as having a security impact of Important.", "threat_severity": "Moderate"}

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