CVE-2026-64409
kernel: Bluetooth: btmtksdio: fix infinite loop in btmtksdio_txrx_work()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 25, 2026
Updated · September 5, 2026
Description
A flaw was found in the Linux kernel's Bluetooth MTK SDIO (btmtksdio) driver. An incorrect timeout check in the btmtksdio_txrx_work() function can lead to an infinite loop. This prevents the loop from terminating and releasing the SDIO host, resulting in a denial of service (DoS) where the system resource becomes unresponsive.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')