4.14-stable review patch. If anyone has any objections, please let me know.
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From: Murray McAllister murray.mcallister@insomniasec.com
commit 920c92448839bd4f8eb87a92b08cad56d449caff upstream.
Dan Carpenter reported an integer underflow issue in the rtl8188eu driver. This is also needed for the length (signed integer) in rtl8723bs, as it is later converted to an unsigned integer and used in a memcpy operation.
Original issue is at https://patchwork.kernel.org/patch/9796371/
Reported-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Murray McAllister murray.mcallister@insomniasec.com Cc: stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/staging/rtl8723bs/core/rtw_ap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/rtl8723bs/core/rtw_ap.c +++ b/drivers/staging/rtl8723bs/core/rtw_ap.c @@ -1059,7 +1059,7 @@ int rtw_check_beacon_data(struct adapter return _FAIL;
- if (len > MAX_IE_SZ) + if (len < 0 || len > MAX_IE_SZ) return _FAIL;
pbss_network->IELength = len;