tree 535b65cf3d29d0291cb2c53d90ac9cb3f846c0b5
parent 074b145a05835e9f93a52323a4770b70b4b782fd
author Pan Bian <bianpan2016@163.com> 1543487119 +0800
committer Kalle Valo <kvalo@codeaurora.org> 1544712822 +0200

mwifiex: fix potential NULL dereference and use after free

There are two defects: (1) passing a NULL bss to
mwifiex_save_hidden_ssid_channels will result in NULL dereference,
(2) using bss after dropping the reference to it via cfg80211_put_bss.
To fix them, the patch moves the buggy code to the branch that bss is
not NULL and puts it before cfg80211_put_bss.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>