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    Subject[PATCH 4.8 13/49] ipv6: dccp: add missing bind_conflict to dccp_ipv6_mapped
    Date
    4.8-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Eric Dumazet <edumazet@google.com>


    [ Upstream commit 990ff4d84408fc55942ca6644f67e361737b3d8e ]

    While fuzzing kernel with syzkaller, Andrey reported a nasty crash
    in inet6_bind() caused by DCCP lacking a required method.

    Fixes: ab1e0a13d7029 ("[SOCK] proto: Add hashinfo member to struct proto")
    Signed-off-by: Eric Dumazet <edumazet@google.com>
    Reported-by: Andrey Konovalov <andreyknvl@google.com>
    Tested-by: Andrey Konovalov <andreyknvl@google.com>
    Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
    Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/dccp/ipv6.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/net/dccp/ipv6.c
    +++ b/net/dccp/ipv6.c
    @@ -958,6 +958,7 @@ static const struct inet_connection_sock
    .getsockopt = ipv6_getsockopt,
    .addr2sockaddr = inet6_csk_addr2sockaddr,
    .sockaddr_len = sizeof(struct sockaddr_in6),
    + .bind_conflict = inet6_csk_bind_conflict,
    #ifdef CONFIG_COMPAT
    .compat_setsockopt = compat_ipv6_setsockopt,
    .compat_getsockopt = compat_ipv6_getsockopt,

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