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rxrpc: Fix undefined packet handling

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By analogy with other Rx implementations, RxRPC packet types 9, 10 and 11
should just be discarded rather than being aborted like other undefined
packet types.

Reported-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Howells 2018-04-02 23:51:39 +01:00 committed by David S. Miller
parent 17dec0a949
commit b41d7cfef5
2 changed files with 12 additions and 0 deletions
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6
net/rxrpc/input.c
View File

@ -1200,6 +1200,12 @@ void rxrpc_data_ready(struct sock *udp_sk)
!rxrpc_validate_jumbo(skb))
goto bad_message;
break;
/* Packet types 9-11 should just be ignored. */
case RXRPC_PACKET_TYPE_PARAMS:
case RXRPC_PACKET_TYPE_10:
case RXRPC_PACKET_TYPE_11:
goto discard;
}
rcu_read_lock();

6
net/rxrpc/protocol.h
View File

@ -46,6 +46,9 @@ struct rxrpc_wire_header {
#define RXRPC_PACKET_TYPE_CHALLENGE 6 /* connection security challenge (SRVR->CLNT) */
#define RXRPC_PACKET_TYPE_RESPONSE 7 /* connection secutity response (CLNT->SRVR) */
#define RXRPC_PACKET_TYPE_DEBUG 8 /* debug info request */
#define RXRPC_PACKET_TYPE_PARAMS 9 /* Parameter negotiation (unspec'd, ignore) */
#define RXRPC_PACKET_TYPE_10 10 /* Ignored */
#define RXRPC_PACKET_TYPE_11 11 /* Ignored */
#define RXRPC_PACKET_TYPE_VERSION 13 /* version string request */
#define RXRPC_N_PACKET_TYPES 14 /* number of packet types (incl type 0) */
@ -78,6 +81,9 @@ struct rxrpc_wire_header {
(1 << RXRPC_PACKET_TYPE_CHALLENGE) | \
(1 << RXRPC_PACKET_TYPE_RESPONSE) | \
/*(1 << RXRPC_PACKET_TYPE_DEBUG) | */ \
(1 << RXRPC_PACKET_TYPE_PARAMS) | \
(1 << RXRPC_PACKET_TYPE_10) | \
(1 << RXRPC_PACKET_TYPE_11) | \
(1 << RXRPC_PACKET_TYPE_VERSION))
/*****************************************************************************/