{"cve":"CVE-2023-53016","nvd":{"published":"2025-03-27T17:15:50.983","modified":"2026-06-17T06:44:07.533","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix possible deadlock in rfcomm_sk_state_change\n\nsyzbot reports a possible deadlock in rfcomm_sk_state_change [1].\nWhile rfcomm_sock_connect acquires the sk lock and waits for\nthe rfcomm lock, rfcomm_sock_release could have the rfcomm\nlock and hit a deadlock for acquiring the sk lock.\nHere's a simplified flow:\n\nrfcomm_sock_connect:\n  lock_sock(sk)\n  rfcomm_dlc_open:\n    rfcomm_lock()\n\nrfcomm_sock_release:\n  rfcomm_sock_shutdown:\n    rfcomm_lock()\n    __rfcomm_dlc_close:\n        rfcomm_k_state_change:\n\t  lock_sock(sk)\n\nThis patch drops the sk lock before calling rfcomm_dlc_open to\navoid the possible deadlock and holds sk's reference count to\nprevent use-after-free after rfcomm_dlc_open completes.","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-416","CWE-667"],"references":["https://git.kernel.org/stable/c/17511bd84871f4a6106cb335616e086880313f3f","https://git.kernel.org/stable/c/1d80d57ffcb55488f0ec0b77928d4f82d16b6a90","https://git.kernel.org/stable/c/98aec50ff7f60cc6f2d6a4396b475c547e58b04d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:00:28.034033815+00:00"},"epss":{"cve":"CVE-2023-53016","score":0.0015,"percentile":0.04131,"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."]}