CVE-2006-7252
Integer overflow in the calloc function in libc/stdlib/malloc.c in jemalloc in libc for FreeBSD 6.4 and NetBSD makes it easier for context-dependent attackers to perform memory-related attacks such as buffer overflows via a large size value, which triggers a memory allocation of one byte.
Date published : 2012-07-25
http://svnweb.freebsd.org/base?view=revision&revision=161263
http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/