{"cve":"CVE-2026-74616","nvd":{"published":"2026-08-22T16:16:34.280","modified":"2026-10-16T20:17:47.017","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxdp: reject clones that overrun skb_shared_info tailroom\n\nxdpf_clone() clones broadcast copies into a single page and sets\nframe_sz to PAGE_SIZE. __xdp_build_skb_from_frame() later treats that\npage like a normal XDP frame and expects the usual skb_shared_info\ntailroom at the end of the buffer.\n\nThe current check only rejects frames whose linear xdp_frame header,\nheadroom, and packet data exceed PAGE_SIZE. A source frame backed by a\nlarger allocation can still satisfy that check while extending into the\nclone's required shared-info area. When such a clone is converted back\ninto an skb, build_skb_around() places skb_shared_info over live packet\nbytes and later writes can corrupt XDP return metadata.\n\nReject clones unless their linear area fits inside\nSKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already\nenforced by the XDP-to-skb conversion path.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":[],"references":["https://git.kernel.org/stable/c/58408982fa39f9758124cec169f42854d6f98f35","https://git.kernel.org/stable/c/685edea27ac68d08fe4dbd3de74b858d2ad8e830","https://git.kernel.org/stable/c/ba13763d667e008e185fedf592d53846a5b457d1","https://git.kernel.org/stable/c/e48e8edbef2eb824201495daa5234560f632b23c","https://git.kernel.org/stable/c/ef4b7c7046d29a67090de15af0da0d1ae8d1b192"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-74616","score":0.00513,"percentile":0.43443,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}