Merge pull request #83 from jow-/rtnl-fix-linkinfo-segfault

rtnl: fix segmentation fault on parsing linkinfo RTA without data

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/rtnl.c b/lib/rtnl.c
index b2063fb..1691377 100644
--- a/lib/rtnl.c
+++ b/lib/rtnl.c
@@ -1893,8 +1893,9 @@ uc_nl_convert_rta_linkinfo_data(uc_value_t *obj, size_t attr, struct nl_msg *msg
 		}
 	}
 
-	if (nattrs > 0) {
-		attr = (attr == IFLA_INFO_KIND) ? IFLA_INFO_DATA : IFLA_INFO_SLAVE_DATA;
+	attr = (attr == IFLA_INFO_KIND) ? IFLA_INFO_DATA : IFLA_INFO_SLAVE_DATA;
+
+	if (nattrs > 0 && tb[attr]) {
 		rv = uc_nl_convert_attrs(msg, nla_data(tb[attr]), nla_len(tb[attr]), 0, attrs, nattrs, vm, obj);
 
 		if (!rv)