Du Cheng 5a1cd67a80 mac80211: fix skb length check in ieee80211_scan_rx() ...

[ Upstream commit e298aa358f ]

Replace hard-coded compile-time constants for header length check
with dynamic determination based on the frame type. Otherwise, we
hit a validation WARN_ON in cfg80211 later.

Fixes: cd418ba63f ("mac80211: convert S1G beacon to scan results")
Reported-by: syzbot+405843667e93b9790fc1@syzkaller.appspotmail.com
Signed-off-by: Du Cheng <ducheng2@gmail.com>
Link: https://lore.kernel.org/r/20210510041649.589754-1-ducheng2@gmail.com
[style fixes, reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-06-23 14:42:41 +02:00

39 KiB

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