CVE-2026-46056
8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < ea18732d2614557e59f4c0d8cdbe6611aeab33b7 | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < d28311539ac9f65e29308ea219ecaa48aa5e76e5 | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < b6ae482f88654db407c8c17619d4b62959b903ef | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < 204028af77a265e31ceb4ba7f643349a3cca72b2 | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < 01a6431766c35dfedb86e0cb5d3fc80c6d604a47 | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < e08d75753db17aa943d7622f09d9c217b5bfd3b8 | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < 8c6443bb9257b780986fb67ec08565bf48ecb8d7 | affected |
| Linux | Linux | 92a25256f142d55e25f9959441cea6ddeabae57e < 85fa3512048793076eef658f66489112dcc91993 | affected |
| Linux | Linux | 3.7 | affected |
| Linux | Linux | 0 < 3.7 | unaffected |
| Linux | Linux | 5.10.259 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.210 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.175 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.140 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.86 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.27 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.4 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/ea18732d2614557e59f4c0d8cdbe6611aeab33b7
- https://git.kernel.org/stable/c/d28311539ac9f65e29308ea219ecaa48aa5e76e5
- https://git.kernel.org/stable/c/b6ae482f88654db407c8c17619d4b62959b903ef
- https://git.kernel.org/stable/c/204028af77a265e31ceb4ba7f643349a3cca72b2
- https://git.kernel.org/stable/c/01a6431766c35dfedb86e0cb5d3fc80c6d604a47
- https://git.kernel.org/stable/c/e08d75753db17aa943d7622f09d9c217b5bfd3b8
- https://git.kernel.org/stable/c/8c6443bb9257b780986fb67ec08565bf48ecb8d7
- https://git.kernel.org/stable/c/85fa3512048793076eef658f66489112dcc91993
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