This is a note to let you know that I've just added the patch titled mac80211: fix IBSS presp allocation size to the 4.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mac80211-fix-ibss-presp-allocation-size.patch and it can be found in the queue-4.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From f1f3e9e2a50a70de908f9dfe0d870e9cdc67e042 Mon Sep 17 00:00:00 2001 From: Johannes Berg <johannes.berg@xxxxxxxxx> Date: Thu, 27 Apr 2017 13:19:04 +0200 Subject: mac80211: fix IBSS presp allocation size From: Johannes Berg <johannes.berg@xxxxxxxxx> commit f1f3e9e2a50a70de908f9dfe0d870e9cdc67e042 upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/mac80211/ibss.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -66,6 +66,8 @@ ieee80211_ibss_build_presp(struct ieee80 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) Patches currently in stable-queue which might be from johannes.berg@xxxxxxxxx are queue-4.11/mac80211-strictly-check-mesh-address-extension-mode.patch queue-4.11/mac80211-wpa-use-constant-time-memory-comparison-for-macs.patch queue-4.11/mac80211-don-t-send-smps-action-frame-in-ap-mode-when-not-needed.patch queue-4.11/mac80211-fix-ibss-presp-allocation-size.patch queue-4.11/mac80211-don-t-look-at-the-pm-bit-of-bar-frames.patch queue-4.11/mac80211-fix-dropped-counter-in-multiqueue-rx.patch