CVE-2026-64470 Bluetooth: btusb: fix use-after-free on marvell probe failure
A use-after-free in the Linux kernel Bluetooth driver allows local attackers to cause a denial of service or potentially execute code via crafted Bluetooth interactions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-64470?
CVE-2026-64470 is an use after free vulnerability in Linux, published on 25 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btusb: fix use-after-free on marvell probe failure
Make sure to stop any TX URBs submitted during Marvell OOB wakeup configuration on later probe failures to avoid use-after-free in the completion callback.
This issue was reported by Sashiko while reviewing a fix for a wakeup source leak in the btusb probe errors paths.
Which versions are affected by CVE-2026-64470?
How do I fix CVE-2026-64470?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-64470 being exploited?
There is no known exploitation of CVE-2026-64470 in the wild and no public exploit code.
Sources
Also known as AZL-93431, BELL-CVE-2026-64470, DEBIAN-CVE-2026-64470, GHSA-mrw8-73g6-9x3w, ROOT-OS-UBUNTU-2204-CVE-2026-64470, UBUNTU-CVE-2026-64470.