ipv6: fix leaking uninitialized port number of offender sockaddr
Hannes Frederic Sowa [Sat, 23 Nov 2013 06:22:33 +0000 (07:22 +0100)]
[ Upstream commit 1fa4c710b6fe7b0aac9907240291b6fe6aafc3b8 ]

Offenders don't have port numbers, so set it to 0.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

net/ipv6/datagram.c

index e0a30a7..8997340 100644 (file)
@@ -378,6 +378,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
        if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL) {
                sin->sin6_family = AF_INET6;
                sin->sin6_flowinfo = 0;
+               sin->sin6_port = 0;
                if (skb->protocol == htons(ETH_P_IPV6)) {
                        sin->sin6_addr = ipv6_hdr(skb)->saddr;
                        if (np->rxopt.all)