CVEvulnerability
CVE-2025-40318
8.8 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2025-12-08
- Last modified
- 2026-10-15
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once
hci_cmd_sync_dequeue_once() does lookup and then cancel
the entry under two separate lock sections. Meanwhile,
hci_cmd_sync_work() can also delete the same entry,
leading to double list_del() and "UAF".
Fix this by holding cmd_sync_work_lock across both
lookup and cancel, so that the entry cannot be removed
concurrently.
References
- https://git.kernel.org/stable/c/09b0cd1297b4dbfe736aeaa0ceeab2265f47f772 git.kernel.org
- https://git.kernel.org/stable/c/0a94f7e017438935c09ef833a1aa908ad9875213 git.kernel.org
- https://git.kernel.org/stable/c/932c0a4f77ac13e526fdd5b42914d29c9821d389 git.kernel.org
- https://git.kernel.org/stable/c/9cd536970192b72257afcdfba0bfc09993e6f19c git.kernel.org
- https://git.kernel.org/stable/c/ae76cf6c2c842944c6514c57df54d728f1916553 git.kernel.org