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Staging: rtl8188eu: rtw_mlme: Fix uninitialized variable authmode

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commit 11536442a3 upstream.

The variable authmode can be uninitialized. The danger would be if
it equals to _WPA_IE_ID_ (0xdd) or _WPA2_IE_ID_ (0x33). We can avoid
this by setting it to zero instead. This is the approach that was
used in the rtl8723bs driver.

Fixes: 7b464c9fa5 ("staging: r8188eu: Add files for new driver - part 4")
Co-developed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200728072153.9202-1-dinghao.liu@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dinghao Liu 2020-07-28 15:21:51 +08:00 committed by Greg Kroah-Hartman
parent af707d9d7f
commit a8b8b535c5
1 changed files with 3 additions and 1 deletions
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4
drivers/staging/rtl8188eu/core/rtw_mlme.c
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@ -1729,9 +1729,11 @@ int rtw_restruct_sec_ie(struct adapter *adapter, u8 *in_ie, u8 *out_ie, uint in_
if ((ndisauthmode == Ndis802_11AuthModeWPA) ||
(ndisauthmode == Ndis802_11AuthModeWPAPSK))
authmode = _WPA_IE_ID_;
if ((ndisauthmode == Ndis802_11AuthModeWPA2) ||
else if ((ndisauthmode == Ndis802_11AuthModeWPA2) ||
(ndisauthmode == Ndis802_11AuthModeWPA2PSK))
authmode = _WPA2_IE_ID_;
else
authmode = 0x0;
if (check_fwstate(pmlmepriv, WIFI_UNDER_WPS)) {
memcpy(out_ie+ielength, psecuritypriv->wps_ie, psecuritypriv->wps_ie_len);