Commit 7e6225a1 authored by Jes Sorensen's avatar Jes Sorensen Committed by Johannes Berg

mac80211: avoid using uninitialized stack data

Avoid a case where we would access uninitialized stack data if the AP
advertises HT support without 40MHz channel support.

Cc: stable@vger.kernel.org
Fixes: f3000e1b ("mac80211: fix broken use of VHT/20Mhz with some APs")
Signed-off-by: default avatarJes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 5fbea337
...@@ -174,6 +174,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, ...@@ -174,6 +174,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
if (!(ht_cap->cap_info & if (!(ht_cap->cap_info &
cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) {
ret = IEEE80211_STA_DISABLE_40MHZ; ret = IEEE80211_STA_DISABLE_40MHZ;
vht_chandef = *chandef;
goto out; goto out;
} }
......
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