CVE-2026-68390
Received Received - Intake

Bluetooth: hci_sync Locking Issue in Linux Kernel

Publication date: 2026-08-10

Last updated on: 2026-08-10

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hold hdev->lock for hci_conn_params lookups hci_conn_params_lookup requires hdev->lock be held, otherwise the list iteration or param access is not safe. Hold hdev->lock for params lookups in hci_sync.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-10
Last Modified
2026-08-10
Generated
2026-08-10
AI Q&A
2026-08-10
EPSS Evaluated
N/A
NVD
CVE-2026-68390
EUVD
EUVD-2026-55576

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a Linux kernel vulnerability in the Bluetooth subsystem. It involves a missing lock when accessing connection parameters in the hci_sync component. The hdev->lock must be held during hci_conn_params lookups to prevent unsafe list iteration or parameter access.

Impact Analysis

This could lead to race conditions in Bluetooth operations, potentially causing memory corruption, crashes, or unexpected behavior in Bluetooth functionality. It may also allow unauthorized access or data leaks if exploited.

Mitigation Strategies

Update the Linux kernel to the latest patched version to resolve the Bluetooth hci_sync vulnerability. Monitor vendor advisories for kernel updates.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-68390. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart