CVE-2026-46056

HighCVSS 8.8/10Last modified Oct 19, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

VendorProductVersions
LinuxLinux>= 92a25256f142d55e25f9959441cea6ddeabae57e, < ea18732d2614557e59f4c0d8cdbe6611aeab33b7; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < d28311539ac9f65e29308ea219ecaa48aa5e76e5; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < b6ae482f88654db407c8c17619d4b62959b903ef; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < 204028af77a265e31ceb4ba7f643349a3cca72b2; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < 01a6431766c35dfedb86e0cb5d3fc80c6d604a47; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < e08d75753db17aa943d7622f09d9c217b5bfd3b8; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < 8c6443bb9257b780986fb67ec08565bf48ecb8d7; >= 92a25256f142d55e25f9959441cea6ddeabae57e, < 85fa3512048793076eef658f66489112dcc91993
LinuxLinux3.7
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystem< *

References

Timeline

Published
May 27, 2026
Last modified
Oct 19, 2026
NVD status
Modified

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CVE-2026-46056: High severity, CVSS 8.8 | Vulnix