In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Fix null ptr deref in btintel_read_version If hci_cmd_sync_complete() is triggered and skb is NULL, then hdev->req_skb is NULL, which will cause this issue.
https://git.kernel.org/stable/c/ffdca0a62abaf8c41d8d9ea132000fd808de329b
https://git.kernel.org/stable/c/ec2049fb2b8be3e108fe2ef1f1040f91e72c9990
https://git.kernel.org/stable/c/b79e040910101b020931ba0c9a6b77e81ab7f645
https://git.kernel.org/stable/c/b19fe5eea619d54eea59bb8a37c0f8d00ef0e912
https://git.kernel.org/stable/c/86e9b47e8a75c74b1bd83a479979b425c5dc8bd9
https://git.kernel.org/stable/c/68a69bb2ecafaacdb998a87783068fb51736f43b
https://git.kernel.org/stable/c/22d3053ef05f0b5045e45bd91e7473846261d65e
https://git.kernel.org/stable/c/006936ecb4edfc3102464044f75858c714e34d28