net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call. CREATE(Triage):(User=admin) CVE-2021-38208 (https://nvd.nist.gov/vuln/detail/CVE-2021-38208)