wlan:Check priviledge permission before processing SET_BAND_CONFIG IOCTL
Kernel assumes all SET IOCTL commands are assigned with even
numbers. But in our WLAN driver, some SET IOCTLS are assigned with
odd numbers. This leads kernel fail to check, for some SET IOCTLs,
whether user has the right permission to do SET operation.
Hence, in driver, before processing SET_BAND_CONFIG IOCTL, making
sure user task has right permission to process the command.
Change-Id: Ie8a36bfa07a7b21601364b27b3c4bc888a6a5b4e
CRs-Fixed: 930952
diff --git a/CORE/HDD/src/wlan_hdd_wext.c b/CORE/HDD/src/wlan_hdd_wext.c
index 8f1412c..7542733 100644
--- a/CORE/HDD/src/wlan_hdd_wext.c
+++ b/CORE/HDD/src/wlan_hdd_wext.c
@@ -9859,6 +9859,13 @@
VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO, "%s: ", __func__);
+ if (!capable(CAP_NET_ADMIN))
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+ FL("permission check failed"));
+ return -EPERM;
+ }
+
return hdd_setBand(dev, value[0]);
}