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| author | Johannes Berg <johannes.berg@intel.com> | 2019-09-23 13:51:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-11 18:36:25 +0200 |
| commit | 39ac36b43f0a4a5298544aa98c85b0e5932d54f4 (patch) | |
| tree | de55ef29a5606b41ab17f03516d39067713391ad | |
| parent | 66ab998269a11f906311005c8a16a65053580561 (diff) | |
| download | linux-stable-39ac36b43f0a4a5298544aa98c85b0e5932d54f4.tar.gz linux-stable-39ac36b43f0a4a5298544aa98c85b0e5932d54f4.tar.bz2 linux-stable-39ac36b43f0a4a5298544aa98c85b0e5932d54f4.zip | |
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>
| -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 bfac250019a3..f03459ddc840 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -2597,6 +2597,8 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, control_freq = nla_get_u32(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; @@ -3125,7 +3127,7 @@ 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 327479ce69f5..36eba5804efe 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -2108,7 +2108,7 @@ 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 46e4d69db845..b1f94730bde2 100644 --- a/net/wireless/wext-compat.c +++ b/net/wireless/wext-compat.c @@ -797,7 +797,7 @@ 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) { |