This is a note to let you know that I've just added the patch titled
wifi: ieee80211: check for NULL in ieee80211_mle_size_ok()
to the 6.9-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-ieee80211-check-for-null-in-ieee80211_mle_size_.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1eb939ad7095e4dcf07a625a3644d7e5f88cc8d2
Author: Johannes Berg <johannes.berg@xxxxxxxxx>
Date: Mon Mar 18 18:53:17 2024 +0200
wifi: ieee80211: check for NULL in ieee80211_mle_size_ok()
[ Upstream commit b7793a1a2f370c28b17d9554b58e9dc51afcfcbd ]
For simplicity, we may want to pass a NULL element, and
while we should then pass also a zero length, just be a
bit more careful here.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
Link: https://msgid.link/20240318184907.4d983653cb8d.Ic3ea99b60c61ac2f7d38cb9fd202a03c97a05601@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index ac5be38d8aaf0..4fd9735bb75e5 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -5166,7 +5166,7 @@ static inline bool ieee80211_mle_size_ok(const u8 *data, size_t len)
bool check_common_len = false;
u16 control;
- if (len < fixed)
+ if (!data || len < fixed)
return false;
control = le16_to_cpu(mle->control);
