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Vulnerabilities CVE-2026-46056

CVE-2026-46056

High
Open
TLP:CLEAR

Bluetooth: hci_event: fix potential UAF in SSP passkey handlers

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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.

Details

CVSS Score
8.8
EPSS Score
0.26%

18th percentile

CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
May 27, 2026
Last Modified
Aug 5, 2026
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