Bug 2502462 (CVE-2026-63974) - CVE-2026-63974 kernel: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close
Summary: CVE-2026-63974 kernel: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE durin...
Keywords:
Status: NEW
Alias: CVE-2026-63974
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 16:09 UTC by OSIDB Bzimport
Modified: 2026-07-21 11:26 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-19 16:09:28 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close

Since hci_dev_close_sync() can now be called during the reset path, we
should also set HCI_CMD_DRAIN_WORKQUEUE. This avoids queuing timeouts
while the hdev workqueue is being drained.
Comment 1 Mauro Matteo Cascella 2026-07-21 11:23:04 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071900-CVE-2026-63974-2863@gregkh/T
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