{"cve":"CVE-2026-97568","nvd":{"published":"2026-09-25T11:17:07.453","modified":"2026-10-19T10:17:25.907","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: syncookies: remember the request backup flag\n\nInstead of using an uninitialised bit when copying the info in\nsubflow_ulp_clone().\n\nTo fix this, no need to extend the join_entry structure: backup is\ncoming from struct mptcp_subflow_request_sock, only one bit. Do the same\nhere by using one bit for both.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/00b2bd518911e0daab00f4749cce68c191ccebb4","https://git.kernel.org/stable/c/06d649f9cd03a9f8e768a658b20acf8d2c8022e0","https://git.kernel.org/stable/c/1668b34452009d27be3262646de748a3e48ffd51","https://git.kernel.org/stable/c/360d99258a6402cb8e49771460944f19f04d25b7","https://git.kernel.org/stable/c/61178d0b85b4b1b53e78b06e89d018d22d102f88"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-97568","score":0.00211,"percentile":0.11183,"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."]}