From 8831d759b2b8b463e9caa45670c34f927627aa3f Mon Sep 17 00:00:00 2001 From: Denis Kenzior Date: Wed, 9 Oct 2019 10:30:37 +0800 Subject: [PATCH] cfg80211: Purge frame registrations on iftype change commit c1d3ad84eae35414b6b334790048406bd6301b12 upstream. Currently frame registrations are not purged, even when changing the interface type. This can lead to potentially weird situations where frames possibly not allowed on a given interface type remain registered due to the type switching happening after registration. The kernel currently relies on userspace apps to actually purge the registrations themselves, this is not something that the kernel should rely on. Add a call to cfg80211_mlme_purge_registrations() to forcefully remove any registrations left over prior to switching the iftype. Cc: stable@vger.kernel.org Signed-off-by: Denis Kenzior Link: https://lore.kernel.org/r/20190828211110.15005-1-denkenz@gmail.com Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- net/wireless/util.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/wireless/util.c b/net/wireless/util.c index c14e8f6e5e19..d641d81da759 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -930,6 +930,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev, } cfg80211_process_rdev_events(rdev); + cfg80211_mlme_purge_registrations(dev->ieee80211_ptr); } err = rdev_change_virtual_intf(rdev, dev, ntype, params); -- GitLab