This is a note to let you know that I've just added the patch titled
vti6: better validate user provided tunnel names
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:
vti6-better-validate-user-provided-tunnel-names.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Tue Apr 10 23:19:25 CEST 2018
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Thu, 5 Apr 2018 06:39:31 -0700
Subject: vti6: better validate user provided tunnel names
From: Eric Dumazet <edumazet@xxxxxxxxxx>
[ Upstream commit 537b361fbcbcc3cd6fe2bb47069fd292b9256d16 ]
Use valid_name() to make sure user does not provide illegal
device name.
Fixes: ed1efb2aefbb ("ipv6: Add support for IPsec virtual tunnel interfaces")
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/ip6_vti.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -212,10 +212,13 @@ static struct ip6_tnl *vti6_tnl_create(s
char name[IFNAMSIZ];
int err;
- if (p->name[0])
+ if (p->name[0]) {
+ if (!dev_valid_name(p->name))
+ goto failed;
strlcpy(name, p->name, IFNAMSIZ);
- else
+ } else {
sprintf(name, "ip6_vti%%d");
+ }
dev = alloc_netdev(sizeof(*t), name, NET_NAME_UNKNOWN, vti6_dev_setup);
if (!dev)
Patches currently in stable-queue which might be from edumazet@xxxxxxxxxx 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