Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the connection can be freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage in both handlers. Keep the existing keypress notification behavior unchanged by routing the early exits through a common unlock path.
Affected products
linux: linux kernel
References9
- git.kernel.org/stable/c/01a6431766c35dfedb86e0cb5d3fc80c6d604a47 Patch
- git.kernel.org/stable/c/204028af77a265e31ceb4ba7f643349a3cca72b2 Patch
- git.kernel.org/stable/c/85fa3512048793076eef658f66489112dcc91993 Patch
- git.kernel.org/stable/c/8c6443bb9257b780986fb67ec08565bf48ecb8d7 Patch
- git.kernel.org/stable/c/b6ae482f88654db407c8c17619d4b62959b903ef Patch
- git.kernel.org/stable/c/e08d75753db17aa943d7622f09d9c217b5bfd3b8 Patch
- git.kernel.org/stable/c/d28311539ac9f65e29308ea219ecaa48aa5e76e5
- git.kernel.org/stable/c/ea18732d2614557e59f4c0d8cdbe6611aeab33b7
- cert-portal.siemens.com/productcert/html/ssa-784472.html
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 21 · as of 14 November 2026
- CWE
- CWE-416
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.