CVE-2026-80819

CVE-2026-80819 is a null pointer dereference in the Linux kernel 's Bluetooth RFCOMM subsystem. The flaw occurs when rfcomm_sock_recvmsg() calls rfcomm_dlc_accept() without holding rfcomm_mutex. A remote peer can trigger the bug by sending a DISC frame on a deferred-setup DLC, which clears d->...