diff options
| author | roel kluin <roel.kluin@gmail.com> | 2009-10-03 11:26:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-29 22:49:17 -0700 |
| commit | 18eb0893c12898253c18ba23b51a6ea9a07ba4c7 (patch) | |
| tree | 5fa3b24c55d520a6554f00eaef872c40d24328e7 | |
| parent | b0c110ca8e89f2c9cd52ec7fb1b98c5b7aa78496 (diff) | |
ibmtr: possible Read buffer overflow?
Prevent read outside array bounds.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/tokenring/ibmtr.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/tokenring/ibmtr.c b/drivers/net/tokenring/ibmtr.c index 525bbc5b9c9..6a3c7510afd 100644 --- a/drivers/net/tokenring/ibmtr.c +++ b/drivers/net/tokenring/ibmtr.c @@ -1143,9 +1143,16 @@ static void dir_open_adapter (struct net_device *dev) } else { char **prphase = printphase; char **prerror = printerror; + int pnr = err / 16 - 1; + int enr = err % 16 - 1; DPRINTK("TR Adapter misc open failure, error code = "); - printk("0x%x, Phase: %s, Error: %s\n", - err, prphase[err/16 -1], prerror[err%16 -1]); + if (pnr < 0 || pnr >= ARRAY_SIZE(printphase) || + enr < 0 || + enr >= ARRAY_SIZE(printerror)) + printk("0x%x, invalid Phase/Error.", err); + else + printk("0x%x, Phase: %s, Error: %s\n", err, + prphase[pnr], prerror[enr]); printk(" retrying after %ds delay...\n", TR_RETRY_INTERVAL/HZ); } |