This is a note to let you know that I've just added the patch titled
wifi: cfg80211: avoid leaking stack data into trace
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-cfg80211-avoid-leaking-stack-data-into-trace.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7285a8e899d71c983638e12fd378601034992ab1
Author: Benjamin Berg <benjamin.berg@xxxxxxxxx>
Date: Mon Sep 25 17:18:56 2023 +0200
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: Benjamin Berg <benjamin.berg@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230925171855.a9271ef53b05.I8180bae663984c91a3e036b87f36a640ba409817@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 3d286f3a60e60..bf968cdbfbb51 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -8502,7 +8502,7 @@ 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;
