diff options
Diffstat (limited to 'src/net/udp')
| -rw-r--r-- | src/net/udp/tftp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/net/udp/tftp.c b/src/net/udp/tftp.c index 889362a1..13734b0f 100644 --- a/src/net/udp/tftp.c +++ b/src/net/udp/tftp.c @@ -741,6 +741,11 @@ static int tftp_rx_data ( struct tftp_request *tftp, rc = -EINVAL; goto done; } + if ( data->block == 0 ) { + DBGC ( tftp, "TFTP %p received data block 0\n", tftp ); + rc = -EINVAL; + goto done; + } /* Extract data */ block = ( ntohs ( data->block ) - 1 ); |