diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2019-09-23 13:51:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-17 13:42:08 -0700 |
| commit | eec7ef3096bfbf58c3a4ce4cf822605ead62ccb7 (patch) | |
| tree | 7079f35e8e3af0aa70787456853f9faa4fba06a8 /net/wireless | |
| parent | 2f2f3ffa761793f2db2f3b0bc6476a069061cb9c (diff) | |
cfg80211: initialize on-stack chandefs
commit f43e5210c739fe76a4b0ed851559d6902f20ceb1 upstream.
In a few places we don't properly initialize on-stack chandefs,
resulting in EDMG data to be non-zero, which broke things.
Additionally, in a few places we rely on the driver to init the
data completely, but perhaps we shouldn't as non-EDMG drivers
may not initialize the EDMG data, also initialize it there.
Cc: stable@vger.kernel.org
Fixes: 2a38075cd0be ("nl80211: Add support for EDMG channels")
Reported-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/1569239475-I2dcce394ecf873376c386a78f31c2ec8b538fa25@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 4 | ||||
| -rw-r--r-- | net/wireless/reg.c | 2 | ||||
| -rw-r--r-- | net/wireless/wext-compat.c | 2 |
3 files changed, 5 insertions, 3 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index d6e629315771..c613be6dbde8 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2069,6 +2069,8 @@ static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); + memset(chandef, 0, sizeof(*chandef)); + chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); chandef->width = NL80211_CHAN_WIDTH_20_NOHT; chandef->center_freq1 = control_freq; @@ -2538,7 +2540,7 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag if (rdev->ops->get_channel) { int ret; - struct cfg80211_chan_def chandef; + struct cfg80211_chan_def chandef = {}; ret = rdev_get_channel(rdev, wdev, &chandef); if (ret == 0) { diff --git a/net/wireless/reg.c b/net/wireless/reg.c index d1378340d590..44befe9f9ff0 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1564,7 +1564,7 @@ static void reg_call_notifier(struct wiphy *wiphy, static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev) { - struct cfg80211_chan_def chandef; + struct cfg80211_chan_def chandef = {}; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); enum nl80211_iftype iftype; diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c index a220156cf217..b3baa34714e3 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -799,7 +799,7 @@ static int cfg80211_wext_giwfreq(struct net_device *dev, { struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); - struct cfg80211_chan_def chandef; + struct cfg80211_chan_def chandef = {}; int ret; switch (wdev->iftype) { |