CVE-2023-2002Public exploit

Bluetooth management access via socket-opener authorization bypass

Published May 26, 2023 · Updated Aug 2, 2024

Incorrect authorization in Linux Kernel before 6.4-rc1 allows local users to issue privileged Bluetooth management commands via HCI sockets. In net/bluetooth/hci_sock.c, hci_sock_ioctl checks the ioctl caller's CAP_NET_ADMIN status rather than the HCI socket opener's status, then sets HCI_SOCK_TRUSTED on a socket opened without that capability. A local account can pass the socket to a setuid or CAP_NET_ADMIN program that invokes ioctl on an inherited descriptor, then pair unwanted devices, block pairing, read out-of-band data, or interrupt Bluetooth communication.

CVSS severity6.8
Medium
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Linux Kernel before 6.4-rc1 allows local users to issue privileged Bluetooth management commands via HCI sockets. In net/bluetooth/hci_sock.c, hci_sock_ioctl checks the ioctl caller's CAP_NET_ADMIN status rather than the HCI socket opener's status, then sets HCI_SOCK_TRUSTED on a socket opened without that capability. A local account can pass the socket to a setuid or CAP_NET_ADMIN program that invokes ioctl on an inherited descriptor, then pair unwanted devices, block pairing, read out-of-band data, or interrupt Bluetooth communication.

The record

CVE
CVE-2023-2002
Published
May 26, 2023
Updated
Aug 2, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-863, CWE-250, T1548.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Kernel prior to Kernel 6.4-rc1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=Kernel prior to Kernel 6.4-rc1

Published CVSS scores

6.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-250Execution with Unnecessary Privileges
T1548.001Setuid and Setgid

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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