{"cve":"CVE-2026-53251","nvd":{"published":"2026-06-25T09:16:43.047","modified":"2026-07-08T16:51:26.347","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync\n\nhci_get_route() returns a reference-counted hci_dev pointer via\nhci_dev_hold(). The function exits normally or with an error without ever\nreleasing it.","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":["CWE-772"],"references":["https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62","https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854","https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f","https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-53251","score":0.00122,"percentile":0.01964,"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."]}