| Message ID | 1386242662-1427-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/net/wireless/scan.c b/net/wireless/scan.c index ae8c186..7811f81 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -254,10 +254,10 @@ void __cfg80211_sched_scan_results(struct work_struct *wk) rdev = container_of(wk, struct cfg80211_registered_device, sched_scan_results_wk); - request = rdev->sched_scan_req; - rtnl_lock(); + request = rdev->sched_scan_req; + /* we don't have sched_scan_req anymore if the scan is stopping */ if (request) { if (request->flags & NL80211_SCAN_FLAG_FLUSH) {
This is a note to let you know that I have just added a patch titled cfg80211: fix scheduled scan pointer access to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.11.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From b7eda9e8a694014fc6d98f9f097439ca4363056c Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes.berg@intel.com> Date: Mon, 21 Oct 2013 11:33:35 +0200 Subject: cfg80211: fix scheduled scan pointer access commit 79845c662eeb95c9a180b9bd0d3ad848ee65b94c upstream. Since rdev->sched_scan_req is dereferenced outside the lock protecting it, this might be done at the wrong time, causing crashes. Move the dereference to where it should be - inside the RTNL locked section. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- net/wireless/scan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- 1.8.3.2