diff options
| author | Jane Zhou <[email protected]> | 2014-11-24 11:44:08 -0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2014-11-24 16:48:20 -0500 |
| commit | 91a0b603469069cdcce4d572b7525ffc9fd352a6 (patch) | |
| tree | d5ebeb30e2cb56fd8f46dd236d41c7e3092ca37a | |
| 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" <[email protected]>
Cc: Alexey Kuznetsov <[email protected]>
Cc: James Morris <[email protected]>
Cc: Hideaki YOSHIFUJI <[email protected]>
Cc: Patrick McHardy <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Jane Zhou <[email protected]>
Signed-off-by: Yiwei Zhao <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -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) |