diff options
| author | Zhu Yi <yi.zhu@intel.com> | 2009-07-09 16:59:49 +0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-24 15:05:09 -0400 |
| commit | 80e5b06a1b0d9a6aa88dc5c9e93ba49510c52b45 (patch) | |
| tree | 08adf2317a7c57d7ee12b60375a40a4865d39a5f /net/wireless/ibss.c | |
| parent | f874011bb01e7fb19904db7f739bb343a0a53fd5 (diff) | |
| download | linux-80e5b06a1b0d9a6aa88dc5c9e93ba49510c52b45.tar.bz2 | |
cfg80211: fix NULL dereference in IBSS SIOCGIWAP
This patch avoids memcpy from wdev->wext.ibss.bssid if it is NULL.
This could happen if we SIOCGIWAP before SIOCSIWAP.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/ibss.c')
| -rw-r--r-- | net/wireless/ibss.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 9394e78cd11f..8b65e212ae49 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -487,8 +487,11 @@ int cfg80211_ibss_wext_giwap(struct net_device *dev, wdev_lock(wdev); if (wdev->current_bss) memcpy(ap_addr->sa_data, wdev->current_bss->pub.bssid, ETH_ALEN); - else + else if (wdev->wext.ibss.bssid) memcpy(ap_addr->sa_data, wdev->wext.ibss.bssid, ETH_ALEN); + else + memset(ap_addr->sa_data, 0, ETH_ALEN); + wdev_unlock(wdev); return 0; |