From 54a5d3828995c0df4f8e12a5d91b1c42f0f323d6 Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Thu, 28 Mar 2013 08:21:46 +0000 Subject: [PATCH] ip_tunnel: Fix off-by-one error in forming dev name. As Ben pointed out following patch fixes bug in checking device name length limits while forming tunnel device name. CC: Ben Hutchings Signed-off-by: Pravin B Shelar Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index 9d96b68..e4147ec 100644 --- 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; } -- 2.7.4