The display driver allocattr functions in NetBSD 3.0 through 4.0BETA2, and NetBSD-current before 20070728, allow local users to cause a denial of service (panic) via a (1) negative or (2) large value in an ioctl call, as demonstrated by the vgaallocattr function.

Multiple buffer overflows in the ISO network protocol support in the NetBSD kernel 2.0 through 4.0BETA2, and NetBSD-current before 20070329, allow local users to execute arbitrary code via long parameters to certain functions, as demonstrated by a long sockaddr structure argument to the clnproute function.