diff -up libnfsidmap-0.25/nss.c.save libnfsidmap-0.25/nss.c

--- libnfsidmap-0.25/nss.c.save	2016-08-17 14:09:18.797550853 -0400

+++ libnfsidmap-0.25/nss.c	2016-08-17 14:09:39.021905256 -0400

@@ -44,6 +44,7 @@

 #include <netdb.h>

 #include <err.h>

 #include <grp.h>

+#include <limits.h>

 #include "nfsidmap.h"

 #include "nfsidmap_internal.h"

 #include "cfg.h"

@@ -171,6 +172,9 @@ static struct passwd *nss_getpwnam(const

 	char *localname;

 	int err = ENOMEM;

+	if (buflen > UINT_MAX)

+		goto err;

+

 	buf = malloc(sizeof(*buf) + buflen);

 	if (buf == NULL)

 		goto err;

@@ -236,8 +240,11 @@ static int nss_name_to_gid(char *name, g

 	if (!localname)

 		goto out;

+	err = -ENOMEM;

+	if (buflen > UINT_MAX)

+		goto out;

+

 	do {

-		err = -ENOMEM;

 		buf = malloc(buflen);

 		if (!buf)

 			goto out_name;