This is a note to let you know that I've just added the patch titled
mac80211: Fix adding of mesh vendor IEs
to the 4.4-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-adding-of-mesh-vendor-ies.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From da7061c82e4a1bc6a5e134ef362c86261906c860 Mon Sep 17 00:00:00 2001
From: Thorsten Horstmann <thorsten@xxxxxxxxxxx>
Date: Fri, 3 Feb 2017 14:38:29 +0100
Subject: mac80211: Fix adding of mesh vendor IEs
From: Thorsten Horstmann <thorsten@xxxxxxxxxxx>
commit da7061c82e4a1bc6a5e134ef362c86261906c860 upstream.
The function ieee80211_ie_split_vendor doesn't return 0 on errors. Instead
it returns any offset < ielen when WLAN_EID_VENDOR_SPECIFIC is found. The
return value in mesh_add_vendor_ies must therefore be checked against
ifmsh->ie_len and not 0. Otherwise all ifmsh->ie starting with
WLAN_EID_VENDOR_SPECIFIC will be rejected.
Fixes: 082ebb0c258d ("mac80211: fix mesh beacon format")
Signed-off-by: Thorsten Horstmann <thorsten@xxxxxxxxxxx>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@xxxxxxxxxxxxxxxxx>
Signed-off-by: Simon Wunderlich <sw@xxxxxxxxxxxxxxxxxx>
[sven@xxxxxxxxxxxxx: Add commit message]
Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/mac80211/mesh.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -355,7 +355,7 @@ int mesh_add_vendor_ies(struct ieee80211
/* fast-forward to vendor IEs */
offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
- if (offset) {
+ if (offset < ifmsh->ie_len) {
len = ifmsh->ie_len - offset;
data = ifmsh->ie + offset;
if (skb_tailroom(skb) < len)
Patches currently in stable-queue which might be from thorsten@xxxxxxxxxxx are
queue-4.4/mac80211-fix-adding-of-mesh-vendor-ies.patch
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