Commit bcc5e2dc authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
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staging: rtl8192u: Fix use after free in ieee80211_rx() 



We cannot dereference the "skb" pointer after calling
ieee80211_monitor_rx(), because it is a use after free.

Fixes: 8fc8598e ("Staging: Added Realtek rtl8192u driver to staging")
Signed-off-by: default avatarDan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/Y33BArx3k/aw6yv/@kili


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9dadff06

drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c

+3 −1
Original line number Diff line number Diff line
@@ -951,9 +951,11 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, 
#endif



	if (ieee->iw_mode == IW_MODE_MONITOR) {

		unsigned int len = skb->len;



		ieee80211_monitor_rx(ieee, skb, rx_stats);

		stats->rx_packets++;

		stats->rx_bytes += skb->len;

		stats->rx_bytes += len;

		return 1;

	}