{"apiVersion":"1.0","identifier":"CVE-2026-74616","description":"In the Linux kernel, the following vulnerability has been resolved: xdp: reject clones that overrun skb_shared_info tailroom xdpf_clone() clones broadcast copies into a single page and sets frame_sz to PAGE_SIZE. __xdp_build_skb_from_frame() later treats that page like a normal XDP frame and expects the usual skb_shared_info tailroom at the end of the buffer. The current check only rejects frames whose linear xdp_frame header, headroom, and packet data exceed PAGE_SIZE. A source frame backed by a larger allocation can still satisfy that check while extending into the clone-s required shared-info area. When such a clone is converted back into an skb, build_skb_around() places skb_shared_info over live packet bytes and later writes can corrupt XDP return metadata. Reject clones unless their linear area fits inside SKB_WITH_OVERHEAD(PAGE_SIZE), matching the tailroom requirement already enforced by the XDP-to-skb conversion path.","publishedAt":"2026-08-22T16:16:34","lastModifiedAt":"2026-08-25T06:18:39","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74616","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00513,"riskScore":1.03,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74616","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74616","en":"https://www.redsauce.net/en/cves/CVE-2026-74616","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74616","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74616","de":"https://www.redsauce.net/de/cves/CVE-2026-74616","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74616","el":"https://www.redsauce.net/el/cves/CVE-2026-74616"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74616"}}