diff -up openssh-5.1p1/sshconnect2.c.bannerlen openssh-5.1p1/sshconnect2.c

--- openssh-5.1p1/sshconnect2.c.bannerlen	2008-07-23 19:18:15.000000000 +0200

+++ openssh-5.1p1/sshconnect2.c	2008-07-31 11:16:51.000000000 +0200

@@ -387,8 +387,9 @@ input_userauth_banner(int type, u_int32_

 	if (options.log_level >= SYSLOG_LEVEL_INFO) {

 		if (len > 65536)

 			len = 65536;

-		msg = xmalloc(len * 4); /* max expansion from strnvis() */

+		msg = xmalloc(len * 4 + 1); /* max expansion from strnvis() */

 		strnvis(msg, raw, len * 4, VIS_SAFE|VIS_OCTAL);

+		msg[len*4] = '\0';

 		fprintf(stderr, "%s", msg);

 		xfree(msg);

 	}