From: Phil Sutter <phil@nwl.cc>
Date: Mon, 21 Aug 2017 09:26:59 +0000 (+0200)
Subject: ipaddress: Avoid accessing uninitialized variable lcl
X-Git-Tag: v4.13.0~46
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d044ea3e784d1a4f0a61f306b86ce95c9a26b0b5;p=thirdparty%2Fiproute2.git

ipaddress: Avoid accessing uninitialized variable lcl

If no address was given, ipaddr_modify() accesses uninitialized data
when assigning to req.ifa.ifa_prefixlen.

Signed-off-by: Phil Sutter <phil@nwl.cc>
---

diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 4d37c5e04..c9312f06d 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -1888,7 +1888,7 @@ static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
 	char  *lcl_arg = NULL;
 	char  *valid_lftp = NULL;
 	char  *preferred_lftp = NULL;
-	inet_prefix lcl;
+	inet_prefix lcl = {};
 	inet_prefix peer;
 	int local_len = 0;
 	int peer_len = 0;