diff options
| author | Jesper Juhl <jj@chaosbits.net> | 2011-02-03 21:14:01 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-03 21:23:53 +0100 |
| commit | 4d048aac990d587c81fc1002e28502e6f95371ee (patch) | |
| tree | 97c20ca2497cee86d9abe5d5b4c88beb92080b5b /drivers | |
| parent | mac80211: fix TX status cookie in HW offload case (diff) | |
| download | linux-4d048aac990d587c81fc1002e28502e6f95371ee.tar.xz linux-4d048aac990d587c81fc1002e28502e6f95371ee.zip | |
wireless, wl1251: Fix potential NULL pointer dereference in wl1251_op_bss_info_changed()
In drivers/net/wireless/wl1251/main.c:wl1251_op_bss_info_changed() we make
a call to ieee80211_beacon_get() which may return NULL, but we do not
check the return value before dereferencing the pointer.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/wl1251/main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl1251/main.c b/drivers/net/wireless/wl1251/main.c index 012e1a4016fe..40372bac9482 100644 --- a/drivers/net/wireless/wl1251/main.c +++ b/drivers/net/wireless/wl1251/main.c @@ -1039,6 +1039,9 @@ static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw, if (changed & BSS_CHANGED_BEACON) { beacon = ieee80211_beacon_get(hw, vif); + if (!beacon) + goto out_sleep; + ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data, beacon->len); |