This is a note to let you know that I've just added the patch titled
mwifiex: fix NULL pointer dereference during hidden SSID scan
to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mwifiex-fix-null-pointer-dereference-during-hidden-ssid-scan.patch
and it can be found in the queue-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 17e524b1b60f4390d24a51d9524d1648cf5d1447 Mon Sep 17 00:00:00 2001
From: Aniket Nagarnaik <aniketn@xxxxxxxxxxx>
Date: Fri, 18 Sep 2015 06:32:09 -0700
Subject: mwifiex: fix NULL pointer dereference during hidden SSID scan
From: Aniket Nagarnaik <aniketn@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
Patches currently in stable-queue which might be from aniketn@xxxxxxxxxxx are
queue-4.3/mwifiex-fix-null-pointer-dereference-during-hidden-ssid-scan.patch
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