{"id":"CVE-2026-100236","state":"PUBLISHED","title":"Dpdk: dpdk: heap out-of-bounds read/write in gso header copy","description":"A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write.","publishedAt":"2026-10-14T16:33:25.792Z","updatedAt":"2026-10-20T01:41:29.598Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","source":"redhat"},"assigner":"redhat","products":["Red Hat Fast Datapath for RHEL 10","Red Hat Fast Datapath for RHEL 8","Red Hat Fast Datapath for RHEL 9","Red Hat Red Hat Enterprise Linux 10","Red Hat Red Hat Enterprise Linux 8","Red Hat Red Hat Enterprise Linux 9","Red Hat Red Hat OpenShift Container Platform 4","Red Hat Red Hat OpenStack Platform 13 (Queens)"],"affected":[{"vendor":"Red Hat","product":"Fast Datapath for RHEL 10","packageName":"grout","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 10","packageName":"openvswitch3.5","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 10","packageName":"openvswitch3.6","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.11","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.12","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.13","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.15","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.16","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.17","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch3.1","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"grout","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch2.17","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.0","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.1","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.2","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.3","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.5","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.6","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"dpdk","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"dpdk","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"dpdk","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openvswitch2.17","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openvswitch3.0","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openvswitch3.1","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 13 (Queens)","packageName":"openvswitch","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:13"]}],"references":["https://access.redhat.com/security/cve/CVE-2026-100236","https://bugzilla.redhat.com/show_bug.cgi?id=2541488"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100236.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100236","state":"PUBLISHED","datePublished":"2026-10-14T16:33:25.792Z","dateUpdated":"2026-10-20T01:41:29.598Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-09-25T16:00:50.249Z"},"containers":{"cna":{"title":"Dpdk: dpdk: heap out-of-bounds read/write in gso header copy","descriptions":[{"lang":"en","value":"A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write."}],"affected":[{"vendor":"Red Hat","product":"Fast Datapath for RHEL 10","packageName":"grout","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 10","packageName":"openvswitch3.5","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 10","packageName":"openvswitch3.6","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.11","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.12","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.13","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.15","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.16","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch2.17","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 8","packageName":"openvswitch3.1","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"grout","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch2.17","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.0","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.1","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.2","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.3","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.4","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.5","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Fast Datapath for RHEL 9","packageName":"openvswitch3.6","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9::fastdatapath"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"dpdk","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"dpdk","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"dpdk","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openvswitch2.17","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openvswitch3.0","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openvswitch3.1","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 13 (Queens)","packageName":"openvswitch","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:13"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-100236","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541488","name":"RHBZ#2541488","tags":["issue-tracking","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"Out-of-bounds Write","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-10-14T16:33:25.792Z"},"datePublic":"2026-10-14T15:03:23.201Z","x_redhatCweChain":"CWE-787: Out-of-bounds Write","workarounds":[{"lang":"en","value":"Do not run software GSO (rte_gso_segment / testpmd --enable-gso) on untrusted packets. Size direct_pool larger than the max header (~208 B tunneled). That does not fully cover the short-first-segment over-read."}],"timeline":[{"lang":"en","time":"2026-09-25T15:53:18.636Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-10-14T15:03:23.201Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Alexandru-Ionut Jipa for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T01:41:21.354320Z","id":"CVE-2026-100236","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-20T01:41:29.598Z"}}]}}}