diff -up ecryptfs-utils-103/src/utils/mount.ecryptfs.c.memcpyfix ecryptfs-utils-103/src/utils/mount.ecryptfs.c

--- ecryptfs-utils-103/src/utils/mount.ecryptfs.c.memcpyfix	2012-07-13 16:50:29.000000000 +0200

+++ ecryptfs-utils-103/src/utils/mount.ecryptfs.c	2013-01-28 17:22:53.769462509 +0100

@@ -355,7 +355,7 @@ static int opts_str_contains_option(char

 			*end = '\0';

 			break;

 		}

-		memcpy(opt, next_opt, end - next_opt);

+		memmove(opt, next_opt, end - next_opt);

 		end = end - (next_opt - opt);

 		*end = '\0';

 	}