From: Jan Engelhardt <jengelh@computergmbh.de>
Date: Mon, 31 Mar 2008 04:40:29 +0000 (+0200)
Subject: ECHO: Catch skb_linearize out-of-memory condition
X-Git-Tag: v1.5.4~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7499163131d4e8707a95e8bc8526cba91fe57f9;p=thirdparty%2Fxtables-addons.git

ECHO: Catch skb_linearize out-of-memory condition
---

diff --git a/extensions/xt_ECHO.c b/extensions/xt_ECHO.c
index f1483f7..10b9a22 100644
--- a/extensions/xt_ECHO.c
+++ b/extensions/xt_ECHO.c
@@ -30,7 +30,8 @@ static unsigned int echo_tg4(struct sk_buff *oldskb,
 	void *payload;
 
 	/* This allows us to do the copy operation in fewer lines of code. */
-	skb_linearize(oldskb);
+	if (skb_linearize(oldskb) < 0)
+		return NF_DROP;
 
 	oldip  = ip_hdr(oldskb);
 	oldudp = skb_header_pointer(oldskb, ip_hdrlen(oldskb),