{"cve":"CVE-2025-21764","nvd":{"published":"2025-02-27T03:15:17.063","modified":"2026-10-15T02:17:33.883","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nndisc: use RCU protection in ndisc_alloc_skb()\n\nndisc_alloc_skb() can be called without RTNL or RCU being held.\n\nAdd RCU protection to avoid possible UAF.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/3c2d705f5adf5d860aaef90cb4211c0fde2ba66d","https://git.kernel.org/stable/c/628e6d18930bbd21f2d4562228afe27694f66da9","https://git.kernel.org/stable/c/96fc896d0e5b37c12808df797397fb16f3080879","https://git.kernel.org/stable/c/9e0ec817eb41a55327a46cd3ce331a9868d60304","https://git.kernel.org/stable/c/b870256dd2a5648d5ed2f22316b3ac29a7e5ed63"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2025-21764","score":0.00271,"percentile":0.1912,"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."]}