CVE-2025-12035 Bluetooth: Integer Overflow in Bluetooth Classic (BR/EDR) L2CAP
An integer overflow in the Zephyr RTOS Bluetooth stack allows attackers to cause denial of service or potentially execute code via malicious L2CAP traffic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12035?
CVE-2025-12035 is a medium-severity vulnerability in zephyrproject-rtos Zephyr, published on 15 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An integer overflow condition exists in Bluetooth Host stack, within the bt_br_acl_recv routine a critical path for processing inbound BR/EDR L2CAP traffic.
Weakness: CWE-190
Which versions are affected by CVE-2025-12035?
How do I fix CVE-2025-12035?
No fix has been published for CVE-2025-12035 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12035 being exploited?
There is no known exploitation of CVE-2025-12035 in the wild and no public exploit code.
Sources
Also known as GHSA-p793-3456-h7w3.