Commit 4d048aac authored Feb 03, 2011 by Jesper Juhl Committed by John W. Linville Feb 03, 2011

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>

parent 4334ec85

drivers/net/wireless/wl1251/main.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);