* [PATCH] cfg80211: reject channels/chandefs with KHz offset >= 1000
@ 2020-04-24 10:01 Johannes Berg
0 siblings, 0 replies; only message in thread
From: Johannes Berg @ 2020-04-24 10:01 UTC (permalink / raw)
To: linux-wireless; +Cc: Thomas Pedersen, Johannes Berg
From: Johannes Berg <johannes.berg@intel.com>
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>
---
net/wireless/chan.c | 3 +++
net/wireless/core.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index d60e50a3b910..e111c08daa0e 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -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) {
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 5757dea2aa94..b795f363d004 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -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++) {
--
2.25.1
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