From 4b67b71dca9c7dea6f10d024c79279ea73b79cc2 Mon Sep 17 00:00:00 2001
From: bluhm <>
Date: Tue, 24 Oct 2017 17:49:35 +0000
Subject: Use a smaller buffer size too peek the receive data.  The content is
 discarded anyway, the plen variable is a leftover from the -j jumbo option.
 reported by Nan Xiao; OK deraadt@

---
 src/usr.bin/nc/netcat.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

(limited to 'src/usr.bin/nc/netcat.c')

diff --git a/src/usr.bin/nc/netcat.c b/src/usr.bin/nc/netcat.c
index ce55972a7c..f8bd8fa498 100644
--- a/src/usr.bin/nc/netcat.c
+++ b/src/usr.bin/nc/netcat.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: netcat.c,v 1.187 2017/07/15 17:27:39 jsing Exp $ */
+/* $OpenBSD: netcat.c,v 1.188 2017/10/24 17:49:35 bluhm Exp $ */
 /*
  * Copyright (c) 2001 Eric Jackson <ericj@monkey.org>
  * Copyright (c) 2015 Bob Beck.  All rights reserved.
@@ -563,13 +563,12 @@ main(int argc, char *argv[])
 				 * initially to wait for a caller, then use
 				 * the regular functions to talk to the caller.
 				 */
-				int rv, plen;
-				char buf[16384];
+				int rv;
+				char buf[2048];
 				struct sockaddr_storage z;
 
 				len = sizeof(z);
-				plen = 2048;
-				rv = recvfrom(s, buf, plen, MSG_PEEK,
+				rv = recvfrom(s, buf, sizeof(buf), MSG_PEEK,
 				    (struct sockaddr *)&z, &len);
 				if (rv < 0)
 					err(1, "recvfrom");
-- 
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