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mac80211: add length check in ieee80211_is_robust_mgmt_frame()

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A few places weren't checking that the frame passed to the
function actually has enough data even though the function
clearly documents it must have a payload byte. Make this
safer by changing the function to take an skb and checking
the length inside. The old version is preserved for now as
the rtl* drivers use it and don't have a correct skb.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2014-01-23 16:20:29 +01:00
parent ae811e21df
commit d8ca16db6b
8 changed files with 28 additions and 19 deletions
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2
drivers/net/wireless/rtlwifi/rtl8188ee/trx.c
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@@ -452,7 +452,7 @@ bool rtl88ee_rx_query_desc(struct ieee80211_hw *hw,
/* During testing, hdr was NULL */
return false;
}
if ((ieee80211_is_robust_mgmt_frame(hdr)) &&
if ((_ieee80211_is_robust_mgmt_frame(hdr)) &&
(ieee80211_has_protected(hdr->frame_control)))
rx_status->flag &= ~RX_FLAG_DECRYPTED;
else