Kernel: double free in hci_conn_cleanup of the bluetooth subsystem

A double-free vulnerability was found in the hciconncleanup in net/bluetooth/hciconn.c in the Linux Kernel. This issue may cause a denial of service or privilege escalation...

hci_conn_cleanup in net/bluetooth/hci_conn.c in the Linux kernel through 6.2.9 has a use-after-free (observed in hci_conn_hash_flush) because of calls to hci_dev_put and hci_conn_put. There is a double free that may lead to privilege escalation.

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