CVE-2022-50833
kernel: Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 30, 2025
Updated · July 8, 2026
Description
n the Linux kernel’s Bluetooth subsystem there is a flaw in the way Bluetooth HCI work items are queued. Under certain conditions, work associated with command timeouts (hdev->{cmd,ncmd}_timer) could be scheduled on the wrong workqueue while the intended workqueue is being drained. This occurs because the queuing logic did not fully account for workqueue destruction and lacked proper synchronization. An unprivileged local user interacting with Bluetooth interfaces may be able to trigger a system crash or denial of service by causing this improper scheduling
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 6.6CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')