{"cve":"CVE-2025-68312","nvd":{"published":"2025-12-16T16:16:10.770","modified":"2026-10-14T16:10:00.250","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Prevents free active kevent\n\nThe root cause of this issue are:\n1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);\nput the kevent work in global workqueue. However, the kevent has not yet\nbeen scheduled when the usbnet device is unregistered. Therefore, executing\nfree_netdev() results in the \"free active object (kevent)\" error reported\nhere.\n\n2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(),\nif the usbnet device is up, ndo_stop() is executed to cancel the kevent.\nHowever, because the device is not up, ndo_stop() is not executed.\n\nThe solution to this problem is to cancel the kevent before executing\nfree_netdev().","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e","https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84","https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d","https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de","https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:17:07.138532058+00:00"},"epss":{"cve":"CVE-2025-68312","score":0.00195,"percentile":0.09155,"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."]}