8.8

CVE-2026-46056

Bluetooth: hci_event: fix potential UAF in SSP passkey handlers

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.7 < 6.1.175
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.140
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.86
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.27
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.174
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2.8 5.9
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/204028af77a265e31ceb4ba7f643349a3cca72b2
Patch
https://git.kernel.org/stable/c/01a6431766c35dfedb86e0cb5d3fc80c6d604a47
Patch
https://git.kernel.org/stable/c/e08d75753db17aa943d7622f09d9c217b5bfd3b8
Patch
https://git.kernel.org/stable/c/8c6443bb9257b780986fb67ec08565bf48ecb8d7
Patch
https://git.kernel.org/stable/c/85fa3512048793076eef658f66489112dcc91993
Patch
https://git.kernel.org/stable/c/b6ae482f88654db407c8c17619d4b62959b903ef
Patch