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Commit 784047eb authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
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staging: rtl8188eu: prevent an underflow in rtw_check_beacon_data() 



The "len" could be as low as -14 so we should check for negatives.

Fixes: 9a7fe54d ("staging: r8188eu: Add source files for new driver - part 1")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f78d7669

drivers/staging/rtl8188eu/core/rtw_ap.c

+1 −1
Original line number Diff line number Diff line
@@ -878,7 +878,7 @@ int rtw_check_beacon_data(struct adapter *padapter, u8 *pbuf, int len) 
		return _FAIL;





	if (len > MAX_IE_SZ)

	if (len < 0 || len > MAX_IE_SZ)

		return _FAIL;



	pbss_network->IELength = len;