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authorDavid Kilroy <kilroyd@googlemail.com>2010-08-21 13:08:15 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-08-25 20:33:17 +0200
commit9736ebfe39687f2edde9e97fc188f013a31048f6 (patch)
tree3893f7aa342d82c69307a9a9972908d77b327a2b /drivers/net/wireless/orinoco
parentnet/mac80211: Use wiphy_<level> (diff)
downloadlinux-9736ebfe39687f2edde9e97fc188f013a31048f6.tar.xz
linux-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>
Diffstat (limited to 'drivers/net/wireless/orinoco')
-rw-r--r--drivers/net/wireless/orinoco/hw.c9
-rw-r--r--drivers/net/wireless/orinoco/wext.c11
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);