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authorJohannes Berg <johannes.berg@intel.com>2021-09-20 16:40:05 +0300
committerJohannes Berg <johannes.berg@intel.com>2021-09-23 14:25:09 +0300
commitb9731062ce8afd35cf723bf3a8ad55d208f915a5 (patch)
tree078ec7637a69b5731b099c5d6b6d907e82d8bea1 /net
parent13cb6d826e0ac0d144b0d48191ff1a111d32f0c6 (diff)
downloadlinux-b9731062ce8afd35cf723bf3a8ad55d208f915a5.tar.xz
mac80211: mesh: fix potentially unaligned access
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>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mesh_ps.c3
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))