CVE-2026-46056

high

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.

References

https://git.kernel.org/stable/c/e08d75753db17aa943d7622f09d9c217b5bfd3b8

https://git.kernel.org/stable/c/8c6443bb9257b780986fb67ec08565bf48ecb8d7

https://git.kernel.org/stable/c/85fa3512048793076eef658f66489112dcc91993

https://git.kernel.org/stable/c/204028af77a265e31ceb4ba7f643349a3cca72b2

https://git.kernel.org/stable/c/01a6431766c35dfedb86e0cb5d3fc80c6d604a47

Details

Source: Mitre, NVD

Published: 2026-05-27

Updated: 2026-05-27

Risk Information

CVSS v2

Base Score: 6.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Severity: High