{"cve":"CVE-2026-64345","nvd":{"published":"2026-07-25T10:17:16.623","modified":"2026-10-30T13:19:34.813","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_printer: take kref only for successful open\n\nprinter_open() returns -EBUSY when the character device is already\nopen, but it increments dev->kref regardless of the return value. VFS\ndoes not call ->release() for a failed open, so every rejected second\nopen permanently leaks one reference.\n\nMove kref_get() into the successful-open branch.","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/30adce93d5c4a5a1ec29d9249e3fdfcc391d406b","https://git.kernel.org/stable/c/75c0ad13e136961328253742501b4efc3988a587","https://git.kernel.org/stable/c/7f1f24c367938c5537e2308bf9a965f051d14774","https://git.kernel.org/stable/c/8a5eba992c862b0c94411eecf9b7121e8636db38","https://git.kernel.org/stable/c/94ec20d97aa51547965a539f660a1fe79c6929a3"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-30T13:47:47.119061695+00:00"},"epss":{"cve":"CVE-2026-64345","score":0.00123,"percentile":0.02021,"date":"2026-10-30"},"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."]}