Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: fix locking in unpair_device/disconnect_sync Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Take hdev->lock for hci_conn lookup and hci_abort_conn(). Don't use RCU to ensure the conn is fully initialized at this point.
References6
- git.kernel.org/stable/c/16cd66443957e4ad42155c6fec401012f600c6f8
- git.kernel.org/stable/c/579faba5ede6df6b7f36777c431dc8dcf9d272e7
- git.kernel.org/stable/c/74f3e6e21ebc6c418d348f8ce68aef6fe6d82c82
- git.kernel.org/stable/c/8bc83f9ef6789571f399ff631a2a14a12b6d8585
- git.kernel.org/stable/c/b11511006f9e17000de3f4cadee451364f658ca3
- git.kernel.org/stable/c/ca58ad287bfc5b9d31a72ecb8650289df2b57250
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 12 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.