CVE-2026-86856

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{"acknowledgement": "Red Hat would like to thank Anthropic Research for reporting this issue.", "bugzilla": {"description": "dpdk: dpdk: Stack and heap buffer overflow in nfp vDPA driver", "id": "2529897", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2529897"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Avoid using the nfp vDPA driver in production until patched. 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No fixed version is available yet (patches are under review). The nfp vDPA PMD was introduced in DPDK 23.11; confirm whether 23.11 LTS is also affected before marking that stream not affected. A guest with access to an NFP vDPA device (class=vdpa) can trigger the overflow. Red Hat has rated this as having a security impact of Important.", "threat_severity": "Moderate"}

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