From: Stephen Hemminger <shemminger@linux-foundation.org>
Date: Mon, 10 Dec 2007 19:34:40 +0000 (-0800)
Subject: Fix off by one in nested attribute management.
X-Git-Tag: v2.6.24-rc6~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=037c635eee994f6b29fc82931490e831d4a2ead2;p=thirdparty%2Fiproute2.git

Fix off by one in nested attribute management.

Fixes segv in:
  tc qdisc show dev eth1
due to uninitialized attribute table.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
---

diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index 12883fe11..d13596fa2 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -632,6 +632,6 @@ int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rt
 		rta = RTA_DATA(rta) + RTA_ALIGN(len);
 		return parse_rtattr_nested(tb, max, rta);
 	}
-	memset(tb, 0, sizeof(struct rtattr *) * max);
+	memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
 	return 0;
 }