diff options
| author |   David Kilroy <kilroyd@googlemail.com> | 2010-08-21 12:08:15 +0100 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2010-08-25 14:33:17 -0400 |
| commit | 9736ebfe39687f2edde9e97fc188f013a31048f6 (patch) | |
| tree | 3893f7aa342d82c69307a9a9972908d77b327a2b | |
| parent | net/mac80211: Use wiphy_<level> (diff) | |
| download | linux-dev-9736ebfe39687f2edde9e97fc188f013a31048f6.tar.xz linux-dev-9736ebfe39687f2edde9e97fc188f013a31048f6.zip | |
orinoco: Fix walking past the end of the buffer
Fix walking past the end of the bitrate_table array
in the case when the loop counter == BITRATE_TABLE_SIZE.
Reported by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/orinoco/hw.c | 9 | ||||
| -rw-r--r-- | drivers/net/wireless/orinoco/wext.c | 11 |
2 files changed, 15 insertions, 5 deletions
diff --git a/drivers/net/wireless/orinoco/hw.c b/drivers/net/wireless/orinoco/hw.c index 077baa86756b..b4772c1c6135 100644 --- a/drivers/net/wireless/orinoco/hw.c +++ b/drivers/net/wireless/orinoco/hw.c @@ -762,14 +762,17 @@ int orinoco_hw_get_act_bitrate(struct orinoco_private *priv, int *bitrate) case FIRMWARE_TYPE_INTERSIL: /* Intersil style rate */ case FIRMWARE_TYPE_SYMBOL: /* Symbol style rate */ for (i = 0; i < BITRATE_TABLE_SIZE; i++) - if (bitrate_table[i].intersil_txratectrl == val) + if (bitrate_table[i].intersil_txratectrl == val) { + *bitrate = bitrate_table[i].bitrate * 100000; break; + } - if (i >= BITRATE_TABLE_SIZE) + if (i >= BITRATE_TABLE_SIZE) { printk(KERN_INFO "%s: Unable to determine current bitrate (0x%04hx)\n", priv->ndev->name, val); + err = -EIO; + } - *bitrate = bitrate_table[i].bitrate * 100000; break; default: BUG(); diff --git a/drivers/net/wireless/orinoco/wext.c b/drivers/net/wireless/orinoco/wext.c index cf7be1eb6124..93505f93bf97 100644 --- a/drivers/net/wireless/orinoco/wext.c +++ b/drivers/net/wireless/orinoco/wext.c @@ -589,8 +589,15 @@ static int orinoco_ioctl_getrate(struct net_device *dev, /* If the interface is running we try to find more about the current mode */ - if (netif_running(dev)) - err = orinoco_hw_get_act_bitrate(priv, &bitrate); + if (netif_running(dev)) { + int act_bitrate; + int lerr; + + /* Ignore errors if we can't get the actual bitrate */ + lerr = orinoco_hw_get_act_bitrate(priv, &act_bitrate); + if (!lerr) + bitrate = act_bitrate; + } orinoco_unlock(priv, &flags); |