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ip_tunnel: Fix off-by-one error in forming dev name.
author
Pravin B Shelar
<pshelar@nicira.com>
Thu, 28 Mar 2013 08:21:46 +0000
(08:21 +0000)
committer
David S. Miller
<davem@davemloft.net>
Fri, 29 Mar 2013 19:24:28 +0000
(15:24 -0400)
As Ben pointed out following patch fixes bug in checking device
name length limits while forming tunnel device name.
CC: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ip_tunnel.c
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diff --git
a/net/ipv4/ip_tunnel.c
b/net/ipv4/ip_tunnel.c
index 9d96b6853f219e792b680319cc9d591db1f8fcf0..e4147ec1665a7af9c9661a12712babdf4bfd29ea 100644
(file)
--- a/
net/ipv4/ip_tunnel.c
+++ b/
net/ipv4/ip_tunnel.c
@@
-284,7
+284,7
@@
static struct net_device *__ip_tunnel_create(struct net *net,
if (parms->name[0])
strlcpy(name, parms->name, IFNAMSIZ);
else {
- if (strlen(ops->kind)
+ 3 >= IFNAMSIZ
) {
+ if (strlen(ops->kind)
> (IFNAMSIZ - 3)
) {
err = -E2BIG;
goto failed;
}