CVE-2024-26903 Bluetooth: rfcomm: Fix null-ptr-deref in rfcomm_check_security

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: rfcomm: Fix null-ptr-deref in rfcommchecksecurity During our fuzz testing of the connection and disconnection process at the RFCOMM layer, we discovered this bug. By comparing the packets from a normal connection and...