SB20260812345 - Use-after-free in Linux kernel bluetooth

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Main Vulnerability Database SB20260812345

SB20260812345 - Use-after-free in Linux kernel bluetooth

Published: August 12, 2026

Security Bulletin ID SB20260812345
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-68189)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in UUID list traversal in hci_sync.c when generating EIR data or class-of-device data during asynchronous command sync work. A local user can add and remove Bluetooth UUID entries through the management socket to cause a denial of service.

The issue is triggered by a race condition between command sync work and management socket operations.


Remediation

Install update from vendor's website.

References