aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/airo.c
diff options
context:
space:
mode:
authorRoel Kluin <roel.kluin@gmail.com>2009-07-25 23:02:32 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-07-27 15:19:36 -0400
commit3d0ccd021b23c18ea2d399fe4a43c955485c765c (patch)
tree9d82b6a49f8cb290adfdddb7d7e43fe1ad64135f /drivers/net/wireless/airo.c
parent2a21f86917f7a9fe13b180e895a816871a234dee (diff)
airo: Buffer overflow
SSID_rid has space for only 3 ssids. txPowerLevels[i] is read before the bounds check for i Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Dan Williams <dcbw@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/airo.c')
-rw-r--r--drivers/net/wireless/airo.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index c70604f0329..8ce5e4cee16 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -5918,20 +5918,19 @@ static int airo_set_essid(struct net_device *dev,
readSsidRid(local, &SSID_rid);
/* Check if we asked for `any' */
- if(dwrq->flags == 0) {
+ if (dwrq->flags == 0) {
/* Just send an empty SSID list */
memset(&SSID_rid, 0, sizeof(SSID_rid));
} else {
- int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
+ unsigned index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
/* Check the size of the string */
- if(dwrq->length > IW_ESSID_MAX_SIZE) {
+ if (dwrq->length > IW_ESSID_MAX_SIZE)
return -E2BIG ;
- }
+
/* Check if index is valid */
- if((index < 0) || (index >= 4)) {
+ if (index >= ARRAY_SIZE(SSID_rid.ssids))
return -EINVAL;
- }
/* Set the SSID */
memset(SSID_rid.ssids[index].ssid, 0,
@@ -6819,7 +6818,7 @@ static int airo_set_txpow(struct net_device *dev,
return -EINVAL;
}
clear_bit (FLAG_RADIO_OFF, &local->flags);
- for (i = 0; cap_rid.txPowerLevels[i] && (i < 8); i++)
+ for (i = 0; i < 8 && cap_rid.txPowerLevels[i]; i++)
if (v == cap_rid.txPowerLevels[i]) {
readConfigRid(local, 1);
local->config.txPower = v;