From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50186 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751888AbeDJVZJ (ORCPT ); Tue, 10 Apr 2018 17:25:09 -0400 Subject: Patch "net: fool proof dev_valid_name()" has been added to the 4.16-stable tree To: edumazet@google.com, davem@davemloft.net, gregkh@linuxfoundation.org Cc: , From: Date: Tue, 10 Apr 2018 23:22:32 +0200 Message-ID: <15233953528223@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: fool proof dev_valid_name() to the 4.16-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-fool-proof-dev_valid_name.patch and it can be found in the queue-4.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Tue Apr 10 23:19:25 CEST 2018 From: Eric Dumazet Date: Thu, 5 Apr 2018 06:39:26 -0700 Subject: net: fool proof dev_valid_name() From: Eric Dumazet [ Upstream commit a9d48205d0aedda021fc3728972a9e9934c2b9de ] We want to use dev_valid_name() to validate tunnel names, so better use strnlen(name, IFNAMSIZ) than strlen(name) to make sure to not upset KASAN. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1027,7 +1027,7 @@ bool dev_valid_name(const char *name) { if (*name == '\0') return false; - if (strlen(name) >= IFNAMSIZ) + if (strnlen(name, IFNAMSIZ) == IFNAMSIZ) return false; if (!strcmp(name, ".") || !strcmp(name, "..")) return false; Patches currently in stable-queue which might be from edumazet@google.com are queue-4.16/sctp-sctp_sockaddr_af-must-check-minimal-addr-length-for-af_inet6.patch queue-4.16/pptp-remove-a-buggy-dst-release-in-pptp_connect.patch queue-4.16/net-fool-proof-dev_valid_name.patch queue-4.16/vti6-better-validate-user-provided-tunnel-names.patch queue-4.16/ipv6-sit-better-validate-user-provided-tunnel-names.patch queue-4.16/ip6_tunnel-better-validate-user-provided-tunnel-names.patch queue-4.16/sctp-do-not-leak-kernel-memory-to-user-space.patch queue-4.16/ip_tunnel-better-validate-user-provided-tunnel-names.patch queue-4.16/ip6_gre-better-validate-user-provided-tunnel-names.patch