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cfg80211: reject channels/chandefs with KHz offset >= 1000

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This should be covered by the next MHz, make sure that the
numbers are always normalized.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20200424120103.12b91ecf75f9.I4bf499d58404283bbfacb517d614a816763bccf2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2020-04-24 12:01:04 +02:00
parent 3b23c184f7
commit be689f68d0
2 changed files with 6 additions and 0 deletions
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3
net/wireless/chan.c
View File

@ -147,6 +147,9 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
if (!chandef->chan)
return false;
if (chandef->freq1_offset >= 1000)
return false;
control_freq = chandef->chan->center_freq;
switch (chandef->width) {

3
net/wireless/core.c
View File

@ -834,6 +834,9 @@ int wiphy_register(struct wiphy *wiphy)
sband->channels[i].orig_mpwr =
sband->channels[i].max_power;
sband->channels[i].band = band;
if (WARN_ON(sband->channels[i].freq_offset >= 1000))
return -EINVAL;
}
for (i = 0; i < sband->n_iftype_data; i++) {