From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 22 Feb 2018 19:55:28 +0000 (+0100)
Subject: regulatory: add NUL to request alpha2
X-Git-Tag: v4.19~1526^2~7^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=657308f73e674e86b60509a430a46e569bf02846;p=platform%2Fkernel%2Flinux-rpi3.git

regulatory: add NUL to request alpha2

Similar to the ancient commit a5fe8e7695dc ("regulatory: add NUL
to alpha2"), add another byte to alpha2 in the request struct so
that when we use nla_put_string(), we don't overrun anything.

Fixes: 73d54c9e74c4 ("cfg80211: add regulatory netlink multicast group")
Reported-by: Kees Cook <keescook@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/include/net/regulatory.h b/include/net/regulatory.h
index ebc5a2e..f83cacc 100644
--- a/include/net/regulatory.h
+++ b/include/net/regulatory.h
@@ -78,7 +78,7 @@ struct regulatory_request {
 	int wiphy_idx;
 	enum nl80211_reg_initiator initiator;
 	enum nl80211_user_reg_hint_type user_reg_hint_type;
-	char alpha2[2];
+	char alpha2[3];
 	enum nl80211_dfs_regions dfs_region;
 	bool intersect;
 	bool processed;