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nl80211: validate S1G channel width

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Validate the S1G channel width input by user to ensure it matches
that of the requested channel

Signed-off-by: Kieran Frewen <kieran.frewen@morsemicro.com>
Signed-off-by: Bassem Dawood <bassem@morsemicro.com>
Link: https://lore.kernel.org/r/20220420041321.3788789-2-kieran.frewen@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Kieran Frewen 2022-04-20 04:13:21 +00:00 committed by Johannes Berg
parent 5e469ed976
commit 5d087aa759
1 changed files with 9 additions and 0 deletions
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9
net/wireless/nl80211.c
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@ -3173,6 +3173,15 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
} else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
chandef->width =
nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
if (chandef->chan->band == NL80211_BAND_S1GHZ) {
/* User input error for channel width doesn't match channel */
if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
NL_SET_ERR_MSG_ATTR(extack,
attrs[NL80211_ATTR_CHANNEL_WIDTH],
"bad channel width");
return -EINVAL;
}
}
if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
chandef->center_freq1 =
nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);