From: Johannes Berg <johannes.berg@xxxxxxxxx>
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: abcff6ef01f9 ("mac80211: add VHT support for IBSS")
Reported-by: Shaul Triebitz <shaul.triebitz@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
net/mac80211/ibss.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 6db09fa18269..364d4e137649 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -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)
--
2.11.0
