{"cve":"CVE-2025-21659","nvd":{"published":"2025-01-21T13:15:09.540","modified":"2026-07-30T06:17:41.663","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdev: prevent accessing NAPI instances from another namespace\n\nThe NAPI IDs were not fully exposed to user space prior to the netlink\nAPI, so they were never namespaced. The netlink API must ensure that\nat the very least NAPI instance belongs to the same netns as the owner\nof the genl sock.\n\nnapi_by_id() can become static now, but it needs to move because of\ndev_get_by_napi_id().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/b683ba0df11ff563cc237eb1b74d6adfa77226bf","https://git.kernel.org/stable/c/d1cacd74776895f6435941f86a1130e58f6dd226"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:58:41.599736885+00:00"},"epss":{"cve":"CVE-2025-21659","score":0.00182,"percentile":0.07763,"date":"2026-10-31"},"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."]}