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Commit aca85d86 authored by Benjamin Berg's avatar Benjamin Berg Committed by Greg Kroah-Hartman
Browse files

wifi: cfg80211: avoid leaking stack data into trace 



[ Upstream commit 334bf33eec5701a1e4e967bcb7cc8611a998334b ]

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: default avatarBenjamin Berg <benjamin.berg@intel.com>
Link: https://lore.kernel.org/r/20230925171855.a9271ef53b05.I8180bae663984c91a3e036b87f36a640ba409817@changeid


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 7923110e

net/wireless/nl80211.c

+1 −1
Original line number Diff line number Diff line
@@ -6159,7 +6159,7 @@ 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;