CVE-2025-38303 Bluetooth: eir: Fix possible crashes on eir_create_adv_data
A missing bounds check in the Linux kernel Bluetooth EIR creation function can cause a crash, leading to denial of service.
- 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-2025-38303?
CVE-2025-38303 is a high-severity vulnerability in Linux kernel, published on 10 Jul 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: eir: Fix possible crashes on eir_create_adv_data
eir_create_adv_data may attempt to add EIR_FLAGS and EIR_TX_POWER without checking if that would fit.
Which versions are affected by CVE-2025-38303?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38303?
Apply the vendor's patch.
Is CVE-2025-38303 being exploited?
There is no known exploitation of CVE-2025-38303 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-64983, BELL-CVE-2025-38303, DEBIAN-CVE-2025-38303, GHSA-87cq-2fcr-7xh3, ROOT-OS-DEBIAN-12-CVE-2025-38303, ROOT-OS-UBUNTU-2404-CVE-2025-38303 and 1 more.