GSD-2021-1000366 Bluetooth: avoid deadlock between hci_dev->lock and socket lock
A deadlock in the Linux Kernel Bluetooth subsystem can cause a denial of service, requiring a local attacker with low privileges to trigger.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000366?
GSD-2021-1000366 is a denial of service vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Bluetooth: avoid deadlock between hci_dev->lock and socket lock
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.37 by commit 7cc0ba67883c6c8d3bddb283f56c167fc837a555, it was introduced in version v5.7 by commit eab2404ba798a8efda2a970f44071c3406d94e57. For more details please see the references link.
Which versions are affected by GSD-2021-1000366?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000366?
No fix has been published for GSD-2021-1000366 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2021-1000366 being exploited?
There is no known exploitation of GSD-2021-1000366 in the wild and no public exploit code.