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| author | Roel Kluin <roel.kluin@gmail.com> | 2009-11-04 08:31:59 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-04 08:31:59 -0800 |
| commit | 286e633ef0ff5bb63c07b4516665da8004966fec (patch) | |
| tree | 0d2dce58a4a44d1697ef51e603b08330344106c1 /drivers/isdn/hisax/hfc_usb.c | |
| parent | a947c8f0313c0cf3691b8d8d2b9aaddf372afdcc (diff) | |
| download | linux-286e633ef0ff5bb63c07b4516665da8004966fec.tar.gz linux-286e633ef0ff5bb63c07b4516665da8004966fec.tar.bz2 linux-286e633ef0ff5bb63c07b4516665da8004966fec.zip | |
isdn: hfc_usb: Fix read buffer overflow
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>
Diffstat (limited to 'drivers/isdn/hisax/hfc_usb.c')
| -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, |