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';
 	}