The modern style negotiation in Network Block Device (nbd-server) 2.9.22 through 3.3 allows remote attackers to cause a denial of service (root process termination) by (1) closing the connection during negotiation or (2) specifying a name for a non-existent export.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.036
EPSS Ranking 87.4%