diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2021-09-20 15:40:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-07 07:53:11 +0200 |
| commit | 35367a5b63d9df4d306be2caa988e245aa5c90b8 (patch) | |
| tree | bf2676fbef15474b57db6ec2506bb128f2458214 /net/mac80211 | |
| parent | 997ee230e4f5285cd98445c102d9033c7ec4814b (diff) | |
mac80211: mesh: fix potentially unaligned access
[ Upstream commit b9731062ce8afd35cf723bf3a8ad55d208f915a5 ]
The pointer here points directly into the frame, so the
access is potentially unaligned. Use get_unaligned_le16
to avoid that.
Fixes: 3f52b7e328c5 ("mac80211: mesh power save basics")
Link: https://lore.kernel.org/r/20210920154009.3110ff75be0c.Ib6a2ff9e9cc9bc6fca50fce631ec1ce725cc926b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/mesh_ps.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/mesh_ps.c b/net/mac80211/mesh_ps.c index 204830a55240..3fbd0b9ff913 100644 --- a/net/mac80211/mesh_ps.c +++ b/net/mac80211/mesh_ps.c @@ -2,6 +2,7 @@ /* * Copyright 2012-2013, Marco Porsch <marco.porsch@s2005.tu-chemnitz.de> * Copyright 2012-2013, cozybit Inc. + * Copyright (C) 2021 Intel Corporation */ #include "mesh.h" @@ -588,7 +589,7 @@ void ieee80211_mps_frame_release(struct sta_info *sta, /* only transmit to PS STA with announced, non-zero awake window */ if (test_sta_flag(sta, WLAN_STA_PS_STA) && - (!elems->awake_window || !le16_to_cpu(*elems->awake_window))) + (!elems->awake_window || !get_unaligned_le16(elems->awake_window))) return; if (!test_sta_flag(sta, WLAN_STA_MPSP_OWNER)) |