{"id":"CVE-2022-50833","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-50833","generatedAt":"2026-10-27T19:39:36.698Z","title":"In the Linux kernel, the following vulnerability has been resolved: Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works syzbot is reporting attempt to schedule hdev->cmd_work work from system_wq WQ into hdev->workqueue WQ which is…","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.","published":"2025-12-30T13:15:58.000Z","lastModified":"2026-06-17T05:24:16.000Z","status":"Deferred","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00235,"percentile":0.14345,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/3c6b036fe5c8ed8b6c4cbdc03605929882907ef0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c4635cf3d845a7324c25c52d549b70c8bd7ad4c7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/deee93d13d385103205879a8a0915036ecd83261","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-50833","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}