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how to check bluetooth driver version in ubuntu

sudo hciconfig -a

"---------------------------------------"
"HCI Version: 4.2 (0x8)  Revision: 0x100"
"---------------------------------------"

| HCI version | Bluetooth version |
|-------------|-------------------|
| 0 (0x0)     | 1.0b              |
| 1 (0x1)     | 1.1               |
| 2 (0x2)     | 1.2               |
| 3 (0x3)     | 2.0               |
| 4 (0x4)     | 2.1               |
| 5 (0x5)     | 3.0               |
| 6 (0x6)     | 4.0               |
| 7 (0x7)     | 4.1               |
| 8 (0x8)     | 4.2               |
| 9 (0x9)     | 5.0               |
| 10 (0xa)    | 5.1               |
| 11 (0xb)    | 5.2               |
| 12 (0xc)    | 5.3               |