1 files changed, 6 insertions, 0 deletions
diff --git a/lib/erl_interface/src/epmd/epmd_port.c b/lib/erl_interface/src/epmd/epmd_port.c
index 3dd3da7aae..698c75c217 100644
--- a/lib/erl_interface/src/epmd/epmd_port.c
+++ b/lib/erl_interface/src/epmd/epmd_port.c
@@ -106,6 +106,12 @@ static int ei_epmd_r4_port (struct in_addr *addr, const char *alive,
 #if defined(VXWORKS)
   char ntoabuf[32];
 #endif
+
+  if (len > sizeof(buf) - 3)
+  {
+      erl_errno = ERANGE;
+      return -1;
+  }
   
   put16be(s,len);
   put8(s,EI_EPMD_PORT2_REQ);