CVE-2025-38099

kernel: Linux kernel Bluetooth: Denial of Service via improper SCO voice setting

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · July 3, 2025

Updated · July 8, 2026

Description

A flaw was found in the Linux kernel's Bluetooth functionality. A local attacker could exploit this vulnerability by establishing a Synchronous Connection-Oriented (SCO) connection, a type of Bluetooth link for time-sensitive data like voice, with an improper voice setting. This improper setting can cause the Bluetooth controller to lock up, leading to a denial of service (DoS) for the affected system, making it unresponsive to Bluetooth commands.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-1287 · Improper Validation of Specified Type of Input