A memory leak in the EFR32 Bluetooth LE stack 5.1.0 through 5.1.1 allows an attacker to send an invalid pairing message and cause future legitimate connection attempts to fail. A reset of the device immediately clears the error.
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
The product does not properly control the allocation and maintenance of a limited resource.