CVE-2025-40318Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once
Updated under an hour ago ()
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from f00f36db76eb8fd10d13e80e2590f23b5beaa54d before 0a94f7e017438935c09ef833a1aa908ad9875213; 1499f79995c7ee58e3bfeeff75f6d1b37dcda881 builds before 932c0a4f77ac13e526fdd5b42914d29c9821d389; from 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 before ae76cf6c2c842944c6514c57df54d728f1916553; 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 builds before 9cd536970192b72257afcdfba0bfc09993e6f19c; 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 builds before 09b0cd1297b4dbfe736aeaa0ceeab2265f47f772; 357603f4d396d85fbf0045512efaf1d7f7394ed7; from 6.1.120 before 6.1.159; from 6.6.51 before 6.6.117; and 1 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/0a94f7e017438935c09ef833a1aa908ad9875213
- https://git.kernel.org/stable/c/932c0a4f77ac13e526fdd5b42914d29c9821d389
- https://git.kernel.org/stable/c/ae76cf6c2c842944c6514c57df54d728f1916553
- https://git.kernel.org/stable/c/9cd536970192b72257afcdfba0bfc09993e6f19c
- https://git.kernel.org/stable/c/09b0cd1297b4dbfe736aeaa0ceeab2265f47f772
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.