CVE-2026-98460 Bluetooth: hci_sock: reject out-of-range OCF values
An unprivileged local attacker can bypass Bluetooth HCI security filters by submitting out-of-range OCF values that alias allowlisted commands.
- 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-2026-98460?
CVE-2026-98460 is a vulnerability in Linux, published on 18 Oct 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: hci_sock: reject out-of-range OCF values
The raw HCI socket security filter has 128 OCF bits per supported OGF, but masks the 10-bit OCF with 127 before looking up the command. An unprivileged socket can therefore submit a reserved OCF that aliases an allowlisted command modulo 128.
A conforming controller should reject reserved opcodes. Nevertheless, the security decision must apply to the opcode that will actually be sent, especially since controller-specific behavior is outside the host stack's control.
Reject OCF values that cannot be represented by the security filter instead of aliasing them onto an unrelated command.
Which versions are affected by CVE-2026-98460?
How do I fix CVE-2026-98460?
Apply the vendor's patch.
Is CVE-2026-98460 being exploited?
There is no known exploitation of CVE-2026-98460 in the wild and no public exploit code.
Sources
Also known as AZL-109296, BELL-CVE-2026-98460, DEBIAN-CVE-2026-98460, GHSA-66xw-2cgj-6x3v, UBUNTU-CVE-2026-98460.