Live › vulnerability › CVE-2026-98460
Go to dashboardThe Linux kernel's raw HCI Bluetooth socket security filter masks the 10-bit opcode to 7 bits, so a reserved command can alias an allowlisted one. An unprivileged local socket user may thereby send Bluetooth controller commands the filter was meant to block.
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First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
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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.
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