{"cve":"CVE-2022-50833","nvd":{"published":"2025-12-30T13:15:57.810","modified":"2026-06-17T05:24:15.947","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works\n\nsyzbot is reporting attempt to schedule hdev->cmd_work work from system_wq\nWQ into hdev->workqueue WQ which is under draining operation [1], for\ncommit c8efcc2589464ac7 (\"workqueue: allow chained queueing during\ndestruction\") does not allow such operation.\n\nThe check introduced by commit 877afadad2dce8aa (\"Bluetooth: When HCI work\nqueue is drained, only queue chained work\") was incomplete.\n\nUse hdev->workqueue WQ when queuing hdev->{cmd,ncmd}_timer works because\nhci_{cmd,ncmd}_timeout() calls queue_work(hdev->workqueue). Also, protect\nthe queuing operation with RCU read lock in order to avoid calling\nqueue_delayed_work() after cancel_delayed_work() completed.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/3c6b036fe5c8ed8b6c4cbdc03605929882907ef0","https://git.kernel.org/stable/c/c4635cf3d845a7324c25c52d549b70c8bd7ad4c7","https://git.kernel.org/stable/c/deee93d13d385103205879a8a0915036ecd83261"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:18:08.089039631+00:00"},"epss":{"cve":"CVE-2022-50833","score":0.00235,"percentile":0.14529,"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."]}