Commit 8373afb6 authored by Johannes Berg's avatar Johannes Berg Committed by Sasha Levin

mac80211: fix IBSS presp allocation size

[ Upstream commit f1f3e9e2 ]

When VHT IBSS support was added, the size of the extra elements
wasn't considered in ieee80211_ibss_build_presp(), which makes
it possible that it would overrun the allocated buffer. Fix it
by allocating the necessary space.

Fixes: abcff6ef ("mac80211: add VHT support for IBSS")
Reported-by: default avatarShaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 26e7f9d2
......@@ -66,6 +66,8 @@ ieee80211_ibss_build_presp(struct ieee80211_sub_if_data *sdata,
2 + (IEEE80211_MAX_SUPP_RATES - 8) +
2 + sizeof(struct ieee80211_ht_cap) +
2 + sizeof(struct ieee80211_ht_operation) +
2 + sizeof(struct ieee80211_vht_cap) +
2 + sizeof(struct ieee80211_vht_operation) +
ifibss->ie_len;
presp = kzalloc(sizeof(*presp) + frame_len, GFP_KERNEL);
if (!presp)
......
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