From: Jan Engelhardt <jengelh@medozas.de>
Date: Tue, 30 Dec 2008 11:03:39 +0000 (+0100)
Subject: rateest: guard against segfault
X-Git-Tag: v1.4.3~62
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3d0a7b800277fcc4401f19a584edf1d7dfaeda9;p=thirdparty%2Fiptables.git

rateest: guard against segfault

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/extensions/libxt_rateest.c b/extensions/libxt_rateest.c
index ebea4376..333239d9 100644
--- a/extensions/libxt_rateest.c
+++ b/extensions/libxt_rateest.c
@@ -306,6 +306,9 @@ rateest_final_check(unsigned int flags)
 {
 	struct xt_rateest_match_info *info = rateest_info;
 
+	if (info == NULL)
+		exit_error(PARAMETER_PROBLEM, "rateest match: "
+		           "you need to specify some flags");
 	if (!(info->flags & XT_RATEEST_MATCH_REL))
 		info->flags |= XT_RATEEST_MATCH_ABS;
 }