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| author | David Howells <dhowells@redhat.com> | 2016-03-04 16:56:06 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2016-03-04 16:56:06 +0100 |
| commit | 351c1e648623b742fe1687636117306adc8b561c (patch) | |
| tree | 483d1630ed4dc47d80ed77bcd266eac81dea1ce2 /net | |
| parent | rxrpc: Fix defined range for /proc/sys/net/rxrpc/rx_mtu (diff) | |
| download | linux-351c1e648623b742fe1687636117306adc8b561c.tar.xz linux-351c1e648623b742fe1687636117306adc8b561c.zip | |
rxrpc: Be more selective about the types of received packets we accept
Currently, received RxRPC packets outside the range 1-13 are rejected.
There are, however, holes in the range that should also be rejected - plus
at least one type we don't yet support - so reject these also.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/rxrpc/ar-input.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/rxrpc/ar-input.c b/net/rxrpc/ar-input.c index e6396a8c969f..63ed75c40e29 100644 --- a/net/rxrpc/ar-input.c +++ b/net/rxrpc/ar-input.c @@ -728,7 +728,8 @@ void rxrpc_data_ready(struct sock *sk) sp->hdr.flags & RXRPC_CLIENT_INITIATED ? "ToServer" : "ToClient", sp->hdr.epoch, sp->hdr.cid, sp->hdr.callNumber); - if (sp->hdr.type == 0 || sp->hdr.type >= RXRPC_N_PACKET_TYPES) { + if (sp->hdr.type >= RXRPC_N_PACKET_TYPES || + !((RXRPC_SUPPORTED_PACKET_TYPES >> sp->hdr.type) & 1)) { _proto("Rx Bad Packet Type %u", sp->hdr.type); goto bad_message; } |