From: Jes Sorensen Date: Wed, 10 Dec 2014 19:14:07 +0000 (-0500) Subject: mac80211: avoid using uninitialized stack data X-Git-Tag: v4.13~6068^2^2~8 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=7e6225a1604d0c6aa4140289bf5761868ffc9c83;p=mirror_ubuntu-bionic-kernel.git 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: f3000e1b43f1 ("mac80211: fix broken use of VHT/20Mhz with some APs") Signed-off-by: Jes Sorensen Signed-off-by: Johannes Berg --- diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 75a9bf50207e..2c36c4765f47 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -174,6 +174,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata, if (!(ht_cap->cap_info & cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH_20_40))) { ret = IEEE80211_STA_DISABLE_40MHZ; + vht_chandef = *chandef; goto out; }