From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40258 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1424632AbdD2G0t (ORCPT ); Sat, 29 Apr 2017 02:26:49 -0400 Subject: Patch "net/packet: fix overflow in check for tp_reserve" has been added to the 4.9-stable tree To: andreyknvl@google.com, davem@davemloft.net, edumazet@google.com, gregkh@linuxfoundation.org Cc: , From: Date: Sat, 29 Apr 2017 08:24:09 +0200 Message-ID: <1493447049121100@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 net/packet: fix overflow in check for tp_reserve to the 4.9-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: net-packet-fix-overflow-in-check-for-tp_reserve.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Sat Apr 29 08:22:13 CEST 2017 From: Andrey Konovalov Date: Wed, 29 Mar 2017 16:11:22 +0200 Subject: net/packet: fix overflow in check for tp_reserve From: Andrey Konovalov [ Upstream commit bcc5364bdcfe131e6379363f089e7b4108d35b70 ] When calculating po->tp_hdrlen + po->tp_reserve the result can overflow. Fix by checking that tp_reserve <= INT_MAX on assign. Signed-off-by: Andrey Konovalov Acked-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/packet/af_packet.c | 2 ++ 1 file changed, 2 insertions(+) --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -3702,6 +3702,8 @@ packet_setsockopt(struct socket *sock, i return -EBUSY; if (copy_from_user(&val, optval, sizeof(val))) return -EFAULT; + if (val > INT_MAX) + return -EINVAL; po->tp_reserve = val; return 0; } Patches currently in stable-queue which might be from andreyknvl@google.com are queue-4.9/ipv6-check-skb-protocol-before-lookup-for-nexthop.patch queue-4.9/ping-implement-proper-locking.patch queue-4.9/net-timestamp-avoid-use-after-free-in-ip_recv_error.patch queue-4.9/sctp-listen-on-the-sock-only-when-it-s-state-is-listening-or-closed.patch queue-4.9/net-ipv6-regenerate-host-route-if-moved-to-gc-list.patch queue-4.9/net-ipv6-rtf_pcpu-should-not-be-settable-from-userspace.patch queue-4.9/net-packet-fix-overflow-in-check-for-tp_frame_nr.patch queue-4.9/net-packet-fix-overflow-in-check-for-tp_reserve.patch queue-4.9/tcp-memset-ca_priv-data-to-0-properly.patch queue-4.9/ip6mr-fix-notification-device-destruction.patch