OpenAFS before 1.6.7 delays the listen thread when an RXS_CheckResponse fails, which allows remote attackers to cause a denial of service (performance degradation) via an invalid packet.
Buffer overflow in the GetStatistics64 remote procedure call (RPC) in OpenAFS 1.4.8 before 1.6.7 allows remote attackers to cause a denial of service (crash) via a crafted statsVersion argument.