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AP: Validate management frame length

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Make sure that received management frames are long enough before
processing them. This avoids a potential segmentation fault if a
driver delivers an invalid frame all the way to hostapd.
This commit is contained in:
Jouni Malinen 2011-01-17 12:21:29 +02:00 • committed by Jouni Malinen
parent e4d7b22a53
commit cbcf92b42f
2 changed files with 5 additions and 0 deletions
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3
src/ap/ieee802_11.c
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@ -1460,6 +1460,9 @@ void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
int broadcast;
u16 fc, stype;
if (len < 24)
return;
mgmt = (struct ieee80211_mgmt *) buf;
fc = le_to_host16(mgmt->frame_control);
stype = WLAN_FC_GET_STYPE(fc);