From: Phil Sutter <phil@nwl.cc>
Date: Mon, 21 Aug 2017 09:27:01 +0000 (+0200)
Subject: ipmaddr: Avoid accessing uninitialized data
X-Git-Tag: v4.13.0~44
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b48a1161f5f9;p=thirdparty%2Fiproute2.git

ipmaddr: Avoid accessing uninitialized data

Looks like this can only happen if /proc/net/igmp is malformed, but
better be sure.

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

diff --git a/ip/ipmaddr.c b/ip/ipmaddr.c
index 4f726fdd9..85a69e779 100644
--- a/ip/ipmaddr.c
+++ b/ip/ipmaddr.c
@@ -136,7 +136,7 @@ static void read_igmp(struct ma_info **result_p)
 
 	while (fgets(buf, sizeof(buf), fp)) {
 		struct ma_info *ma;
-		size_t len;
+		size_t len = 0;
 
 		if (buf[0] != '\t') {
 			sscanf(buf, "%d%s", &m.index, m.name);