From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: lizf@kernel.org To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Eliad Peller , Eliad Peller , Johannes Berg , Zefan Li Subject: [PATCH 3.4 08/91] regulatory: add NUL to alpha2 Date: Thu, 27 Nov 2014 16:41:51 +0800 Message-Id: <1417077794-9299-8-git-send-email-lizf@kernel.org> In-Reply-To: <1417077368-9217-1-git-send-email-lizf@kernel.org> References: <1417077368-9217-1-git-send-email-lizf@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: From: Eliad Peller 3.4.105-rc1 review patch. If anyone has any objections, please let me know. ------------------ commit a5fe8e7695dc3f547e955ad2b662e3e72969e506 upstream. alpha2 is defined as 2-chars array, but is used in multiple places as string (e.g. with nla_put_string calls), which might leak kernel data. Solve it by simply adding an extra char for the NULL terminator, making such operations safe. Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg [lizf: Backported to 3.4: adjust context] Signed-off-by: Zefan Li --- include/net/regulatory.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/net/regulatory.h b/include/net/regulatory.h index a5f7993..8d64abf 100644 --- a/include/net/regulatory.h +++ b/include/net/regulatory.h @@ -97,7 +97,7 @@ struct ieee80211_reg_rule { struct ieee80211_regdomain { u32 n_reg_rules; - char alpha2[2]; + char alpha2[3]; u8 dfs_region; struct ieee80211_reg_rule reg_rules[]; }; -- 1.9.1