The process_rs function in the router advertisement daemon (radvd) before 1.8.2, when UnicastOnly is enabled, allows remote attackers to cause a denial of service (temporary service hang) via a large number of ND_ROUTER_SOLICIT requests.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.