netfilter: nfnetlink_{log,queue}: fix information leaks in netlink message

[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / net / netfilter / nfnetlink_queue_core.c

diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index 971ea145ab3ea33a2d42ad0cf66e7025c1457832..8a703c3dd318b660c5e02b326495dbbc7b9f5b3e 100644 (file)
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -463,7 +463,10 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
        if (indev && entskb->dev &&
            entskb->mac_header != entskb->network_header) {
                struct nfqnl_msg_packet_hw phw;
-               int len = dev_parse_header(entskb, phw.hw_addr);
+               int len;
+
+               memset(&phw, 0, sizeof(phw));
+               len = dev_parse_header(entskb, phw.hw_addr);
                if (len) {
                        phw.hw_addrlen = htons(len);
                        if (nla_put(skb, NFQA_HWADDR, sizeof(phw), &phw))