From: Benjamin Berg Date: Mon, 25 Sep 2023 15:18:56 +0000 (+0200) Subject: wifi: cfg80211: avoid leaking stack data into trace X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=334bf33eec5701a1e4e967bcb7cc8611a998334b;p=users%2Fjedix%2Flinux-maple.git wifi: cfg80211: avoid leaking stack data into trace If the structure is not initialized then boolean types might be copied into the tracing data without being initialised. This causes data from the stack to leak into the trace and also triggers a UBSAN failure which can easily be avoided here. Signed-off-by: Benjamin Berg Link: https://lore.kernel.org/r/20230925171855.a9271ef53b05.I8180bae663984c91a3e036b87f36a640ba409817@changeid Signed-off-by: Johannes Berg --- diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7a88361b3414..931a03f4549c 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -8501,7 +8501,7 @@ static int nl80211_update_mesh_config(struct sk_buff *skb, struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct net_device *dev = info->user_ptr[1]; struct wireless_dev *wdev = dev->ieee80211_ptr; - struct mesh_config cfg; + struct mesh_config cfg = {}; u32 mask; int err;