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mac80211: mesh: fix potentially unaligned access
[ Upstream commitb9731062ce
] The pointer here points directly into the frame, so the access is potentially unaligned. Use get_unaligned_le16 to avoid that. Fixes:3f52b7e328
("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>
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1 changed files with 2 additions and 1 deletions
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@ -2,6 +2,7 @@
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/*
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* Copyright 2012-2013, Marco Porsch <marco.porsch@s2005.tu-chemnitz.de>
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* Copyright 2012-2013, cozybit Inc.
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* Copyright (C) 2021 Intel Corporation
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*/
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#include "mesh.h"
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@ -584,7 +585,7 @@ void ieee80211_mps_frame_release(struct sta_info *sta,
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/* only transmit to PS STA with announced, non-zero awake window */
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if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
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(!elems->awake_window || !le16_to_cpu(*elems->awake_window)))
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(!elems->awake_window || !get_unaligned_le16(elems->awake_window)))
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return;
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if (!test_sta_flag(sta, WLAN_STA_MPSP_OWNER))
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