diff options
| author | Jane Zhou <a17711@motorola.com> | 2014-11-24 11:44:08 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-24 16:48:20 -0500 |
| commit | 91a0b603469069cdcce4d572b7525ffc9fd352a6 (patch) | |
| tree | d5ebeb30e2cb56fd8f46dd236d41c7e3092ca37a /net/ipv4 | |
| parent | 6e58040b848162d77243cf499d026c6253278e29 (diff) | |
net/ping: handle protocol mismatching scenario
ping_lookup() may return a wrong sock if sk_buff's and sock's protocols
dont' match. For example, sk_buff's protocol is ETH_P_IPV6, but sock's
sk_family is AF_INET, in that case, if sk->sk_bound_dev_if is zero, a wrong
sock will be returned.
the fix is to "continue" the searching, if no matching, return NULL.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Jane Zhou <a17711@motorola.com>
Signed-off-by: Yiwei Zhao <gbjc64@motorola.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/ping.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 57f7c9804139..85a02a75ad83 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -217,6 +217,8 @@ static struct sock *ping_lookup(struct net *net, struct sk_buff *skb, u16 ident) &ipv6_hdr(skb)->daddr)) continue; #endif + } else { + continue; } if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != dif) |