SB2026072790 - Use-after-free in Linux kernel bluetooth driver

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Main Vulnerability Database SB2026072790

SB2026072790 - Use-after-free in Linux kernel bluetooth driver

Published: July 27, 2026

Security Bulletin ID SB2026072790
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-2026-64471)

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 attacker to cause a denial of service.

The vulnerability exists due to use-after-free in the btusb driver probe error handling in drivers/bluetooth/btusb.c when handling Bluetooth USB controller registration failures and subsequent interface disconnection. A local attacker can trigger controller registration failure to cause a denial of service.

The issue can also result in a double-free when the sibling interfaces are eventually disconnected.


Remediation

Install update from vendor's website.

References