CVE-2024-56757 Bluetooth: btusb: mediatek: add intf release flow when usb disconnect
A missing interface release in the Linux kernel Bluetooth driver causes a kernel panic when a MediaTek USB dongle is disconnected.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-56757?
CVE-2024-56757 is a high-severity denial of service vulnerability in Linux kernel, published on 6 Jan 2025. 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: mediatek: add intf release flow when usb disconnect
MediaTek claim an special usb intr interface for ISO data transmission. The interface need to be released before unregistering hci device when usb disconnect. Removing BT usb dongle without properly releasing the interface may cause Kernel panic while unregister hci device.
Weakness: CWE-404
Which versions are affected by CVE-2024-56757?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-56757?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-56757 being exploited?
There is no known exploitation of CVE-2024-56757 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-55038, AZL-55091, BELL-CVE-2024-56757, DEBIAN-CVE-2024-56757, GHSA-gw7h-65mp-jqvp, ROOT-OS-DEBIAN-12-CVE-2024-56757 and 3 more.