{"id":"DEBIAN-CVE-2022-50833","details":"In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: use hdev-\u003eworkqueue when queuing hdev-\u003e{cmd,ncmd}_timer works  syzbot is reporting attempt to schedule hdev-\u003ecmd_work work from system_wq WQ into hdev-\u003eworkqueue WQ which is under draining operation [1], for commit c8efcc2589464ac7 (\"workqueue: allow chained queueing during destruction\") does not allow such operation.  The check introduced by commit 877afadad2dce8aa (\"Bluetooth: When HCI work queue is drained, only queue chained work\") was incomplete.  Use hdev-\u003eworkqueue WQ when queuing hdev-\u003e{cmd,ncmd}_timer works because hci_{cmd,ncmd}_timeout() calls queue_work(hdev-\u003eworkqueue). Also, protect the queuing operation with RCU read lock in order to avoid calling queue_delayed_work() after cancel_delayed_work() completed.","modified":"2026-08-27T22:47:38.634021644Z","published":"2025-12-30T13:15:57.810Z","upstream":["CVE-2022-50833"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50833"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50833.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50833.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50833.json"}}],"schema_version":"1.9.0"}