From ce38fb102924a58da95759a837f1076ff8d612d5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Aeneas=20Jai=C3=9Fle?= <aj@ajaissle.de>
Date: Tue, 25 Mar 2014 14:09:21 +0100
Subject: [PATCH] Prevent possible buffer overflow in iperf_error.c

---
 src/iperf_error.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/iperf_error.c b/src/iperf_error.c
index 51b0f8b..46d4f4a 100644
--- a/src/iperf_error.c
+++ b/src/iperf_error.c
@@ -324,11 +324,11 @@ iperf_strerror(int i_errno)
     }
 
     if (herr || perr)
-        strncat(errstr, ": ", len);
+        strncat(errstr, ": ", sizeof(errstr)-strlen(errstr)-1);
     if (h_errno && herr) {
-        strncat(errstr, hstrerror(h_errno), len);
+        strncat(errstr, hstrerror(h_errno), sizeof(errstr)-strlen(errstr)-1);
     } else if (errno && perr) {
-        strncat(errstr, strerror(errno), len);
+        strncat(errstr, strerror(errno), sizeof(errstr)-strlen(errstr)-1);
     }
 
     return errstr;