lkml.org 
[lkml]   [2015]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.3 069/125] mwifiex: fix NULL pointer dereference during hidden SSID scan
Date
4.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Aniket Nagarnaik <aniketn@marvell.com>

commit 17e524b1b60f4390d24a51d9524d1648cf5d1447 upstream.

This NULL pointer dereference is observed during suspend resume
stress test. All pending commands are cancelled when system goes
into suspend state. There a corner case in which host may receive
response for last scan command after this and try to trigger extra
active scan for hidden SSIDs.

The issue is fixed by adding a NULL check to skip that extra scan.

Fixes: 2375fa2b36feaf34 (mwifiex: fix unable to connect hidden SSID..)
Signed-off-by: Aniket Nagarnaik <aniketn@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/net/wireless/mwifiex/scan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1889,7 +1889,7 @@ mwifiex_active_scan_req_for_passive_chan
u8 id = 0;
struct mwifiex_user_scan_cfg *user_scan_cfg;

- if (adapter->active_scan_triggered) {
+ if (adapter->active_scan_triggered || !priv->scan_request) {
adapter->active_scan_triggered = false;
return 0;
}



\
 
 \ /
  Last update: 2015-12-07 16:21    [W:0.240 / U:2.524 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site