CVE-2026-46056

HIGH EPSS 17.5%
Published May 27, 20261mo ago · Modified Jun 19, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 19, 2026 1w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
17.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥3.7  –  <6.1.175
linuxlinux_kernel*≥6.2  –  <6.6.140
linuxlinux_kernel*≥6.7  –  <6.12.86
linuxlinux_kernel*≥6.13  –  <6.18.27
linuxlinux_kernel*≥6.19  –  <7.0.4

References 8

  • git.kernel.org https://git.kernel.org/stable/c/01a6431766c35dfedb86e0cb5d3fc80c6d604a47
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/204028af77a265e31ceb4ba7f643349a3cca72b2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/85fa3512048793076eef658f66489112dcc91993
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c6443bb9257b780986fb67ec08565bf48ecb8d7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b6ae482f88654db407c8c17619d4b62959b903ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d28311539ac9f65e29308ea219ecaa48aa5e76e5
  • git.kernel.org https://git.kernel.org/stable/c/e08d75753db17aa943d7622f09d9c217b5bfd3b8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea18732d2614557e59f4c0d8cdbe6611aeab33b7

Remediation

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