ipv6: dccp: add missing bind_conflict to dccp_ipv6_mapped

While fuzzing kernel with syzkaller, Andrey reported a nasty crash in inet6_bind() caused by DCCP lacking a required method. Fixes: ab1e0a1 ("[SOCK] proto: Add hashinfo member to struct proto") Signed-off-by: Eric Dumazet <[email protected]> Reported-by: Andrey Konovalov <[email protected]> Tested-by: Andrey Konovalov <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Acked-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: David S. Miller <[email protected]>
ambv · Nov 3, 2016 · 990ff4d · 990ff4d
1 parent 29ab5a3
commit 990ff4d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
@@ -958,6 +958,7 @@ static const struct inet_connection_sock_af_ops dccp_ipv6_mapped = {
 	.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,