From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:35175 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751638AbcIINpQ (ORCPT ); Fri, 9 Sep 2016 09:45:16 -0400 Subject: Patch "[PATCH 133/135] netfilter: x_tables: check for size overflow" has been added to the 4.4-stable tree To: fw@strlen.de, alexander.levin@verizon.com, gregkh@linuxfoundation.org, hawkes@google.com, pablo@netfilter.org Cc: , From: Date: Fri, 09 Sep 2016 15:38:48 +0200 Message-ID: <1473428328122225@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled [PATCH 133/135] netfilter: x_tables: check for size overflow 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: 0133-netfilter-x_tables-check-for-size-overflow.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 know about it. >>From 857d46ff805805aeb539429216be3db548b03350 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Wed, 13 Jul 2016 11:44:54 +0100 Subject: [PATCH 133/135] netfilter: x_tables: check for size overflow [ Upstream commit d157bd761585605b7882935ffb86286919f62ea1 ] Ben Hawkes says: integer overflow in xt_alloc_table_info, which on 32-bit systems can lead to small structure allocation and a copy_from_user based heap corruption. Reported-by: Ben Hawkes Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/netfilter/x_tables.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -897,6 +897,9 @@ struct xt_table_info *xt_alloc_table_inf struct xt_table_info *info = NULL; size_t sz = sizeof(*info) + size; + if (sz < sizeof(*info)) + return NULL; + /* Pedantry: prevent them from hitting BUG() in vmalloc.c --RR */ if ((SMP_ALIGN(size) >> PAGE_SHIFT) + 2 > totalram_pages) return NULL; Patches currently in stable-queue which might be from fw@strlen.de are queue-4.4/0133-netfilter-x_tables-check-for-size-overflow.patch