diff options
| author | Roel Kluin <roel.kluin@gmail.com> | 2009-11-04 08:31:59 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-08 10:22:52 -0800 |
| commit | b02f6a9593cbe0c3a9cf6052acf58c11980d6efd (patch) | |
| tree | 33bdac95ab543b8647908c2835393d6a816b7b36 | |
| parent | 548193715cb69952c6655f8800d81a8bfe2d8bc5 (diff) | |
isdn: hfc_usb: Fix read buffer overflow
commit 286e633ef0ff5bb63c07b4516665da8004966fec upstream.
Check whether index is within bounds before testing the element.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/isdn/hisax/hfc_usb.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/isdn/hisax/hfc_usb.c b/drivers/isdn/hisax/hfc_usb.c index 9de54202c90c..a420b64472e3 100644 --- a/drivers/isdn/hisax/hfc_usb.c +++ b/drivers/isdn/hisax/hfc_usb.c @@ -817,8 +817,8 @@ collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish) } /* we have a complete hdlc packet */ if (finish) { - if ((!fifo->skbuff->data[fifo->skbuff->len - 1]) - && (fifo->skbuff->len > 3)) { + if (fifo->skbuff->len > 3 && + !fifo->skbuff->data[fifo->skbuff->len - 1]) { if (fifon == HFCUSB_D_RX) { DBG(HFCUSB_DBG_DCHANNEL, |